nat44_handoff.c
nat44_hairpinning.c
nat44_classify.c
- nat64.c
- nat64_cli.c
- nat64_in2out.c
- nat64_out2in.c
- nat64_db.c
nat_affinity.c
nat_format.c
nat_syslog.c
nat44_classify.c
nat44_hairpinning.c
nat44_handoff.c
- nat64_in2out.c
- nat64_out2in.c
out2in.c
out2in_ed.c
LINK_LIBRARIES nat
)
+
+add_vpp_plugin(nat64
+ SOURCES
+ nat_syslog.c
+ nat64/nat64.c
+ nat64/nat64_db.c
+ nat64/nat64_cli.c
+ nat64/nat64_api.c
+ nat64/nat64_in2out.c
+ nat64/nat64_out2in.c
+
+ MULTIARCH_SOURCES
+ nat64/nat64_in2out.c
+ nat64/nat64_out2in.c
+
+ API_FILES
+ nat64/nat64.api
+ nat_types.api
+
+ LINK_LIBRARIES nat
+)
#ifndef included_nat_lib_h__
#define included_nat_lib_h__
+#include <vlibapi/api.h>
+
+/* NAT API Configuration flags */
+#define foreach_nat_config_flag \
+ _(0x01, IS_TWICE_NAT) \
+ _(0x02, IS_SELF_TWICE_NAT) \
+ _(0x04, IS_OUT2IN_ONLY) \
+ _(0x08, IS_ADDR_ONLY) \
+ _(0x10, IS_OUTSIDE) \
+ _(0x20, IS_INSIDE) \
+ _(0x40, IS_STATIC) \
+ _(0x80, IS_EXT_HOST_VALID)
+
+typedef enum nat_config_flags_t_
+{
+#define _(n,f) NAT_API_##f = n,
+ foreach_nat_config_flag
+#undef _
+} nat_config_flags_t;
+
+#define foreach_nat_counter _ (tcp) _ (udp) _ (icmp) _ (other) _ (drops)
+
#define foreach_nat_error \
_ (VALUE_EXIST, -1, "Value already exists") \
_ (NO_SUCH_ENTRY, -2, "No such entry") \
#undef _
} nat_protocol_t;
+/* default session timeouts */
+#define NAT_UDP_TIMEOUT 300
+#define NAT_TCP_TRANSITORY_TIMEOUT 240
+#define NAT_TCP_ESTABLISHED_TIMEOUT 7440
+#define NAT_ICMP_TIMEOUT 60
+
+// TODO: move common formating definitions here
+
#endif /* included_nat_lib_h__ */
/*
* fd.io coding-style-patch-verification: ON
* limitations under the License.
*/
+#ifndef __included_lib_nat_inlines_h__
+#define __included_lib_nat_inlines_h__
+
#include <vnet/tcp/tcp_packet.h>
#include <vnet/ip/ip4_packet.h>
+static inline void
+increment_v4_address (ip4_address_t * a)
+{
+ u32 v;
+
+ v = clib_net_to_host_u32 (a->as_u32) + 1;
+ a->as_u32 = clib_host_to_net_u32 (v);
+}
+
always_inline void
mss_clamping (u16 mss_clamping, tcp_header_t * tcp, ip_csum_t * sum)
{
mss = *(u16 *) (data + 2);
if (clib_net_to_host_u16 (mss) > mss_clamping)
{
- u16 mss_value_net = clib_host_to_net_u16(mss_clamping);
+ u16 mss_value_net = clib_host_to_net_u16 (mss_clamping);
*sum =
ip_csum_update (*sum, mss, mss_value_net, ip4_header_t,
length);
}
}
}
+
+#endif /* __included_lib_nat_inlines_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
*/
define nat_show_config_reply
{
+ option deprecated;
u32 context;
i32 retval;
bool static_mapping_only;
*/
define nat_show_config_2
{
+ option deprecated;
u32 client_index;
u32 context;
};
*/
define nat_show_config_2_reply
{
+ option deprecated;
u32 context;
i32 retval;
bool static_mapping_only;
u32 context;
bool enabled;
};
-
-/*
- * NAT64 APIs
- */
-
-/** \brief Add/delete address range to NAT64 pool
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param start_addr - start IPv4 address of the range
- @param end_addr - end IPv4 address of the range
- @param vrf_id - VRF id of tenant, ~0 means independent of VRF
- @param is_add - true if add, false if delete
-*/
-autoreply define nat64_add_del_pool_addr_range {
- u32 client_index;
- u32 context;
- vl_api_ip4_address_t start_addr;
- vl_api_ip4_address_t end_addr;
- u32 vrf_id;
- bool is_add;
-};
-
-/** \brief Dump NAT64 pool addresses
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-define nat64_pool_addr_dump {
- u32 client_index;
- u32 context;
-};
-
-/** \brief NAT64 pool address details response
- @param context - sender context, to match reply w/ request
- @param address - IPv4 address
- @param vfr_id - VRF id of tenant, ~0 means independent of VRF
-*/
-define nat64_pool_addr_details {
- u32 context;
- vl_api_ip4_address_t address;
- u32 vrf_id;
-};
-
-/** \brief Enable/disable NAT64 feature on the interface
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param is_add - true if add, false if delete
- @param flags - flag NAT_IS_INSIDE if interface is inside else
- interface is outside
- @param sw_if_index - index of the interface
-*/
-autoreply define nat64_add_del_interface {
- u32 client_index;
- u32 context;
- bool is_add;
- vl_api_nat_config_flags_t flags;
- vl_api_interface_index_t sw_if_index;
-};
-
-/** \brief Dump interfaces with NAT64 feature
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-define nat64_interface_dump {
- u32 client_index;
- u32 context;
-};
-
-/** \brief NAT64 interface details response
- @param context - sender context, to match reply w/ request
- @param flags - flag NAT_IS_INSIDE if interface is inside,
- flag NAT_IS_OUTSIDE if interface is outside
- and if both flags are set the interface is
- both inside and outside
- @param sw_if_index - index of the interface
-*/
-define nat64_interface_details {
- u32 context;
- vl_api_nat_config_flags_t flags;
- vl_api_interface_index_t sw_if_index;
-};
-
-/** \brief Add/delete NAT64 static BIB entry
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param i_addr - inside IPv6 address
- @param o_addr - outside IPv4 address
- @param i_port - inside port number
- @param o_port - outside port number
- @param vrf_id - VRF id of tenant
- @param proto - protocol number
- @param is_add - true if add, false if delete
-*/
- autoreply define nat64_add_del_static_bib {
- u32 client_index;
- u32 context;
- vl_api_ip6_address_t i_addr;
- vl_api_ip4_address_t o_addr;
- u16 i_port;
- u16 o_port;
- u32 vrf_id;
- u8 proto;
- bool is_add;
-};
-
-/** \brief Dump NAT64 BIB
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param proto - protocol of the BIB: 255 - all BIBs
- 6 - TCP BIB
- 17 - UDP BIB
- 1/58 - ICMP BIB
- otherwise - "unknown" protocol BIB
-*/
-define nat64_bib_dump {
- u32 client_index;
- u32 context;
- u8 proto;
-};
-
-/** \brief NAT64 BIB details response
- @param context - sender context, to match reply w/ request
- @param i_addr - inside IPv6 address
- @param o_addr - outside IPv4 address
- @param i_port - inside port number
- @param o_port - outside port number
- @param vrf_id - VRF id of tenant
- @param proto - protocol number
- @param flags - flag NAT_IS_STATIC if BIB entry is static
- or BIB entry is dynamic
- @param ses_num - number of sessions associated with the BIB entry
-*/
-define nat64_bib_details {
- u32 context;
- vl_api_ip6_address_t i_addr;
- vl_api_ip4_address_t o_addr;
- u16 i_port;
- u16 o_port;
- u32 vrf_id;
- u8 proto;
- vl_api_nat_config_flags_t flags;
- u32 ses_num;
-};
-
-/** \brief Dump NAT64 session table
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param proto - protocol of the session table: 255 - all STs
- 6 - TCP ST
- 17 - UDP ST
- 1/58 - ICMP ST
- otherwise - "unknown" proto ST
-*/
-define nat64_st_dump {
- u32 client_index;
- u32 context;
- u8 proto;
-};
-
-/** \brief NAT64 session table details response
- @param context - sender context, to match reply w/ request
- @param il_addr - inside IPv6 address of the local host
- @param ol_addr - outside IPv4 address of the local host
- @param il_port - inside port number id of the local host/inside ICMP id
- @param ol_port - outside port number of the local host/outside ICMP id
- @param ir_addr - inside IPv6 address of the remote host
- @param or_addr - outside IPv4 address of the remote host
- @param r_port - port number of the remote host (not used for ICMP)
- @param vrf_id - VRF id of tenant
- @param proto - protocol number
-*/
-define nat64_st_details {
- u32 context;
- vl_api_ip6_address_t il_addr;
- vl_api_ip4_address_t ol_addr;
- u16 il_port;
- u16 ol_port;
- vl_api_ip6_address_t ir_addr;
- vl_api_ip4_address_t or_addr;
- u16 r_port;
- u32 vrf_id;
- u8 proto;
-};
-
-/** \brief Add/del NAT64 prefix
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param prefix - NAT64 prefix
- @param vrf_id - VRF id of tenant
- @param is_add - true if add, false if delete
-*/
-autoreply define nat64_add_del_prefix {
- u32 client_index;
- u32 context;
- vl_api_ip6_prefix_t prefix;
- u32 vrf_id;
- bool is_add;
-};
-
-/** \brief Dump NAT64 prefix
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
-*/
-define nat64_prefix_dump {
- u32 client_index;
- u32 context;
-};
-
-/** \brief Dump NAT64 prefix details response
- @param context - sender context, to match reply w/ request
- @param prefix - NAT64 prefix
- @param vrf_id - VRF id of tenant
-*/
-define nat64_prefix_details {
- u32 context;
- vl_api_ip6_prefix_t prefix;
- u32 vrf_id;
-};
-
-/** \brief Add/delete NAT64 pool address from specific interfce
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param is_add - true if add, false if delete
- @param sw_if_index - software index of the interface
-*/
-autoreply define nat64_add_del_interface_addr {
- u32 client_index;
- u32 context;
- bool is_add;
- vl_api_interface_index_t sw_if_index;
-};
#include <nat/nat.h>
#include <nat/nat_dpo.h>
#include <nat/nat_ipfix_logging.h>
-#include <nat/nat64.h>
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
#include <nat/nat_affinity.h>
/* Init IPFIX logging */
snat_ipfix_logging_init (vm);
- /* Init NAT64 */
- error = nat64_init (vm);
- if (error)
- return error;
-
ip4_table_bind_callback_t cbt4 = {
.function = snat_ip4_table_bind,
};
u32 static_mapping_buckets = 1024;
uword static_mapping_memory_size = 64 << 20;
- u32 nat64_bib_buckets = 1024;
- u32 nat64_bib_memory_size = 128 << 20;
-
- u32 nat64_st_buckets = 2048;
- uword nat64_st_memory_size = 256 << 20;
-
u32 max_users_per_thread = 0;
u32 user_memory_size = 0;
u32 max_translations_per_thread = 0;
if (unformat (input, "connection tracking"))
static_mapping_connection_tracking = 1;
}
- else if (unformat (input, "nat64 bib hash buckets %d",
- &nat64_bib_buckets))
- ;
- else if (unformat (input, "nat64 bib hash memory %d",
- &nat64_bib_memory_size))
- ;
- else
- if (unformat (input, "nat64 st hash buckets %d", &nat64_st_buckets))
- ;
- else if (unformat (input, "nat64 st hash memory %d",
- &nat64_st_memory_size))
- ;
else if (unformat (input, "out2in dpo"))
sm->out2in_dpo = 1;
else if (unformat (input, "endpoint-dependent"))
sm->static_mapping_only = static_mapping_only;
sm->static_mapping_connection_tracking = static_mapping_connection_tracking;
- nat64_set_hash (nat64_bib_buckets, nat64_bib_memory_size, nat64_st_buckets,
- nat64_st_memory_size);
-
if (sm->endpoint_dependent)
{
sm->worker_in2out_cb = nat44_ed_get_worker_in2out_cb;
};
} snat_user_key_t;
-/* NAT API Configuration flags */
-#define foreach_nat_config_flag \
- _(0x01, IS_TWICE_NAT) \
- _(0x02, IS_SELF_TWICE_NAT) \
- _(0x04, IS_OUT2IN_ONLY) \
- _(0x08, IS_ADDR_ONLY) \
- _(0x10, IS_OUTSIDE) \
- _(0x20, IS_INSIDE) \
- _(0x40, IS_STATIC) \
- _(0x80, IS_EXT_HOST_VALID) \
-
-typedef enum nat_config_flags_t_
-{
-#define _(n,f) NAT_API_##f = n,
- foreach_nat_config_flag
-#undef _
-} nat_config_flags_t;
-
/* External address and port allocation modes */
#define foreach_nat_addr_and_port_alloc_alg \
_(0, DEFAULT, "default") \
#include <nat/nat.h>
#include <nat/nat_ipfix_logging.h>
-#include <nat/nat64.h>
+#include <nat/lib/nat_inlines.h>
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
#include <nat/nat_affinity.h>
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (line_input, "udp %u", &sm->udp_timeout))
- {
- if (nat64_set_udp_timeout (sm->udp_timeout))
- {
- error = clib_error_return (0, "Invalid UDP timeout value");
- goto done;
- }
- }
+ if (unformat (line_input, "udp %u", &sm->udp_timeout));
else if (unformat (line_input, "tcp-established %u",
- &sm->tcp_established_timeout))
- {
- if (nat64_set_tcp_timeouts
- (sm->tcp_transitory_timeout, sm->tcp_established_timeout))
- {
- error =
- clib_error_return (0,
- "Invalid TCP established timeouts value");
- goto done;
- }
- }
+ &sm->tcp_established_timeout));
else if (unformat (line_input, "tcp-transitory %u",
- &sm->tcp_transitory_timeout))
- {
- if (nat64_set_tcp_timeouts
- (sm->tcp_transitory_timeout, sm->tcp_established_timeout))
- {
- error =
- clib_error_return (0,
- "Invalid TCP transitory timeouts value");
- goto done;
- }
- }
- else if (unformat (line_input, "icmp %u", &sm->icmp_timeout))
- {
- if (nat64_set_icmp_timeout (sm->icmp_timeout))
- {
- error = clib_error_return (0, "Invalid ICMP timeout value");
- goto done;
- }
- }
+ &sm->tcp_transitory_timeout));
+ else if (unformat (line_input, "icmp %u", &sm->icmp_timeout));
else if (unformat (line_input, "reset"))
{
sm->udp_timeout = SNAT_UDP_TIMEOUT;
sm->tcp_established_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
sm->tcp_transitory_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
sm->icmp_timeout = SNAT_ICMP_TIMEOUT;
- nat64_set_udp_timeout (0);
- nat64_set_icmp_timeout (0);
- nat64_set_tcp_timeouts (0, 0);
}
else
{
--- /dev/null
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+option version = "1.0.0";
+import "vnet/ip/ip_types.api";
+import "vnet/interface_types.api";
+import "plugins/nat/nat_types.api";
+
+/**
+ * @file nat64.api
+ * @brief VPP control-plane API messages.
+ *
+ * This file defines VPP control-plane API messages which are generally
+ * called through a shared memory interface.
+ */
+
+/** \brief Enable/disable NAT64 plugin
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param bib_buckets - Number of BIB hash buckets
+ @param bib_memory_size - Memory size of BIB hash
+ @param st_buckets - Number of session table hash buckets
+ @param st_memory_size - Memory size of session table hash
+ @param enable - true if enable, false if disable
+*/
+autoreply define nat64_plugin_enable_disable {
+ u32 client_index;
+ u32 context;
+ u32 bib_buckets;
+ u32 bib_memory_size;
+ u32 st_buckets;
+ u32 st_memory_size;
+ bool enable;
+ option status="in_progress";
+};
+
+/** \brief Set values of timeouts for NAT64 sessions (seconds)
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param udp - UDP timeout (default 300sec)
+ @param tcp_established - TCP established timeout (default 7440sec)
+ @param tcp_transitory - TCP transitory timeout (default 240sec)
+ @param icmp - ICMP timeout (default 60sec)
+*/
+autoreply define nat64_set_timeouts {
+ u32 client_index;
+ u32 context;
+ u32 udp;
+ u32 tcp_established;
+ u32 tcp_transitory;
+ u32 icmp;
+};
+
+/** \brief Get values of timeouts for NAT64 sessions (seconds)
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat64_get_timeouts {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief Get values of timeouts for NAT64 sessions reply
+ @param context - sender context, to match reply w/ request
+ @param retval - return code
+ @param udp - UDP timeout
+ @param tcp_established - TCP established timeout
+ @param tcp_transitory - TCP transitory timeout
+ @param icmp - ICMP timeout
+*/
+define nat64_get_timeouts_reply {
+ u32 context;
+ i32 retval;
+ u32 udp;
+ u32 tcp_established;
+ u32 tcp_transitory;
+ u32 icmp;
+};
+
+/** \brief Add/delete address range to NAT64 pool
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param start_addr - start IPv4 address of the range
+ @param end_addr - end IPv4 address of the range
+ @param vrf_id - VRF id of tenant, ~0 means independent of VRF
+ @param is_add - true if add, false if delete
+*/
+autoreply define nat64_add_del_pool_addr_range {
+ u32 client_index;
+ u32 context;
+ vl_api_ip4_address_t start_addr;
+ vl_api_ip4_address_t end_addr;
+ u32 vrf_id;
+ bool is_add;
+};
+
+/** \brief Dump NAT64 pool addresses
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat64_pool_addr_dump {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief NAT64 pool address details response
+ @param context - sender context, to match reply w/ request
+ @param address - IPv4 address
+ @param vfr_id - VRF id of tenant, ~0 means independent of VRF
+*/
+define nat64_pool_addr_details {
+ u32 context;
+ vl_api_ip4_address_t address;
+ u32 vrf_id;
+};
+
+/** \brief Enable/disable NAT64 feature on the interface
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param flags - flag NAT_IS_INSIDE if interface is inside else
+ interface is outside
+ @param sw_if_index - index of the interface
+*/
+autoreply define nat64_add_del_interface {
+ u32 client_index;
+ u32 context;
+ bool is_add;
+ vl_api_nat_config_flags_t flags;
+ vl_api_interface_index_t sw_if_index;
+};
+
+/** \brief Dump interfaces with NAT64 feature
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat64_interface_dump {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief NAT64 interface details response
+ @param context - sender context, to match reply w/ request
+ @param flags - flag NAT_IS_INSIDE if interface is inside,
+ flag NAT_IS_OUTSIDE if interface is outside
+ and if both flags are set the interface is
+ both inside and outside
+ @param sw_if_index - index of the interface
+*/
+define nat64_interface_details {
+ u32 context;
+ vl_api_nat_config_flags_t flags;
+ vl_api_interface_index_t sw_if_index;
+};
+
+/** \brief Add/delete NAT64 static BIB entry
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param i_addr - inside IPv6 address
+ @param o_addr - outside IPv4 address
+ @param i_port - inside port number
+ @param o_port - outside port number
+ @param vrf_id - VRF id of tenant
+ @param proto - protocol number
+ @param is_add - true if add, false if delete
+*/
+ autoreply define nat64_add_del_static_bib {
+ u32 client_index;
+ u32 context;
+ vl_api_ip6_address_t i_addr;
+ vl_api_ip4_address_t o_addr;
+ u16 i_port;
+ u16 o_port;
+ u32 vrf_id;
+ u8 proto;
+ bool is_add;
+};
+
+/** \brief Dump NAT64 BIB
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param proto - protocol of the BIB: 255 - all BIBs
+ 6 - TCP BIB
+ 17 - UDP BIB
+ 1/58 - ICMP BIB
+ otherwise - "unknown" protocol BIB
+*/
+define nat64_bib_dump {
+ u32 client_index;
+ u32 context;
+ u8 proto;
+};
+
+/** \brief NAT64 BIB details response
+ @param context - sender context, to match reply w/ request
+ @param i_addr - inside IPv6 address
+ @param o_addr - outside IPv4 address
+ @param i_port - inside port number
+ @param o_port - outside port number
+ @param vrf_id - VRF id of tenant
+ @param proto - protocol number
+ @param flags - flag NAT_IS_STATIC if BIB entry is static
+ or BIB entry is dynamic
+ @param ses_num - number of sessions associated with the BIB entry
+*/
+define nat64_bib_details {
+ u32 context;
+ vl_api_ip6_address_t i_addr;
+ vl_api_ip4_address_t o_addr;
+ u16 i_port;
+ u16 o_port;
+ u32 vrf_id;
+ u8 proto;
+ vl_api_nat_config_flags_t flags;
+ u32 ses_num;
+};
+
+/** \brief Dump NAT64 session table
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param proto - protocol of the session table: 255 - all STs
+ 6 - TCP ST
+ 17 - UDP ST
+ 1/58 - ICMP ST
+ otherwise - "unknown" proto ST
+*/
+define nat64_st_dump {
+ u32 client_index;
+ u32 context;
+ u8 proto;
+};
+
+/** \brief NAT64 session table details response
+ @param context - sender context, to match reply w/ request
+ @param il_addr - inside IPv6 address of the local host
+ @param ol_addr - outside IPv4 address of the local host
+ @param il_port - inside port number id of the local host/inside ICMP id
+ @param ol_port - outside port number of the local host/outside ICMP id
+ @param ir_addr - inside IPv6 address of the remote host
+ @param or_addr - outside IPv4 address of the remote host
+ @param r_port - port number of the remote host (not used for ICMP)
+ @param vrf_id - VRF id of tenant
+ @param proto - protocol number
+*/
+define nat64_st_details {
+ u32 context;
+ vl_api_ip6_address_t il_addr;
+ vl_api_ip4_address_t ol_addr;
+ u16 il_port;
+ u16 ol_port;
+ vl_api_ip6_address_t ir_addr;
+ vl_api_ip4_address_t or_addr;
+ u16 r_port;
+ u32 vrf_id;
+ u8 proto;
+};
+
+/** \brief Add/del NAT64 prefix
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param prefix - NAT64 prefix
+ @param vrf_id - VRF id of tenant
+ @param is_add - true if add, false if delete
+*/
+autoreply define nat64_add_del_prefix {
+ u32 client_index;
+ u32 context;
+ vl_api_ip6_prefix_t prefix;
+ u32 vrf_id;
+ bool is_add;
+};
+
+/** \brief Dump NAT64 prefix
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+*/
+define nat64_prefix_dump {
+ u32 client_index;
+ u32 context;
+};
+
+/** \brief Dump NAT64 prefix details response
+ @param context - sender context, to match reply w/ request
+ @param prefix - NAT64 prefix
+ @param vrf_id - VRF id of tenant
+*/
+define nat64_prefix_details {
+ u32 context;
+ vl_api_ip6_prefix_t prefix;
+ u32 vrf_id;
+};
+
+/** \brief Add/delete NAT64 pool address from specific interfce
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - true if add, false if delete
+ @param sw_if_index - software index of the interface
+*/
+autoreply define nat64_add_del_interface_addr {
+ u32 client_index;
+ u32 context;
+ bool is_add;
+ vl_api_interface_index_t sw_if_index;
+};
/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT64 implementation
- */
-#include <nat/nat64.h>
-#include <nat/nat64_db.h>
-#include <nat/nat_inlines.h>
-#include <vnet/fib/ip4_fib.h>
#include <vppinfra/crc32.h>
+#include <vnet/fib/ip4_fib.h>
+
#include <vnet/ip/reass/ip4_sv_reass.h>
#include <vnet/ip/reass/ip6_sv_reass.h>
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+#include <nat/nat64/nat64.h>
nat64_main_t nat64_main;
/* *INDENT-OFF* */
-
/* Hook up input features */
VNET_FEATURE_INIT (nat64_in2out, static) = {
.arc_name = "ip6-unicast",
.runs_before = VNET_FEATURES ("ip4-lookup"),
.runs_after = VNET_FEATURES ("ip4-sv-reassembly-feature"),
};
-
-
+VLIB_PLUGIN_REGISTER () = {
+ .version = VPP_BUILD_VER,
+ .description = "NAT64",
+};
static u8 well_known_prefix[] = {
0x00, 0x64, 0xff, 0x9b,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00
};
-
/* *INDENT-ON* */
+#define nat_elog_str(_str) \
+do \
+ { \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "nat-msg " _str, \
+ .format_args = "", \
+ }; \
+ ELOG_DATA (&vlib_global_main.elog_main, e); \
+ } while (0);
+
static void
nat64_ip4_add_del_interface_address_cb (ip4_main_t * im, uword opaque,
u32 sw_if_index,
nat64_main_t *nm = &nat64_main;
int i, j;
+ if (plugin_enabled () == 0)
+ return;
+
for (i = 0; i < vec_len (nm->auto_add_sw_if_indices); i++)
{
if (sw_if_index == nm->auto_add_sw_if_indices[i])
nat64_get_worker_in2out (ip6_address_t * addr)
{
nat64_main_t *nm = &nat64_main;
- snat_main_t *sm = nm->sm;
- u32 next_worker_index = nm->sm->first_worker_index;
+ u32 next_worker_index = nm->first_worker_index;
u32 hash;
#ifdef clib_crc32c_uses_intrinsics
hash = clib_xxhash (tmp);
#endif
- if (PREDICT_TRUE (is_pow2 (_vec_len (sm->workers))))
- next_worker_index += sm->workers[hash & (_vec_len (sm->workers) - 1)];
+ if (PREDICT_TRUE (is_pow2 (_vec_len (nm->workers))))
+ next_worker_index += nm->workers[hash & (_vec_len (nm->workers) - 1)];
else
- next_worker_index += sm->workers[hash % _vec_len (sm->workers)];
+ next_worker_index += nm->workers[hash % _vec_len (nm->workers)];
return next_worker_index;
}
nat64_get_worker_out2in (vlib_buffer_t * b, ip4_header_t * ip)
{
nat64_main_t *nm = &nat64_main;
- snat_main_t *sm = nm->sm;
udp_header_t *udp;
u16 port;
u32 proto;
/* worker by outside port (TCP/UDP) */
port = clib_net_to_host_u16 (port);
if (port > 1024)
- return nm->sm->first_worker_index + ((port - 1024) / sm->port_per_thread);
+ return nm->first_worker_index + ((port - 1024) / nm->port_per_thread);
return vlib_get_thread_index ();
}
nat64_main_t *nm = &nat64_main;
vlib_thread_main_t *tm = vlib_get_thread_main ();
ip4_add_del_interface_address_callback_t cb4;
- ip4_main_t *im = &ip4_main;
- nm->sm = &snat_main;
vlib_node_t *node;
- vec_validate (nm->db, tm->n_vlib_mains - 1);
+ clib_memset (nm, 0, sizeof (*nm));
+
+ nm->ip4_main = &ip4_main;
+ nm->log_class = vlib_log_register_class ("nat64", 0);
+
+ nm->port_per_thread = 0xffff - 1024;
nm->fq_in2out_index = ~0;
nm->fq_out2in_index = ~0;
node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
nm->error_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat64-in2out");
nm->in2out_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat64-in2out-slowpath");
nm->in2out_slowpath_node_index = node->index;
-
node = vlib_get_node_by_name (vm, (u8 *) "nat64-out2in");
nm->out2in_node_index = node->index;
- /* set session timeouts to default values */
- nm->udp_timeout = SNAT_UDP_TIMEOUT;
- nm->icmp_timeout = SNAT_ICMP_TIMEOUT;
- nm->tcp_trans_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
- nm->tcp_est_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
+ node = vlib_get_node_by_name (vm, (u8 *) "nat64-expire-worker-walk");
+ nm->expire_worker_walk_node_index = node->index;
+
+ nm->fib_src_hi = fib_source_allocate ("nat64-hi",
+ FIB_SOURCE_PRIORITY_HI,
+ FIB_SOURCE_BH_SIMPLE);
+ nm->fib_src_low = fib_source_allocate ("nat64-low",
+ FIB_SOURCE_PRIORITY_LOW,
+ FIB_SOURCE_BH_SIMPLE);
- nm->total_enabled_count = 0;
+ // set protocol timeouts to defaults
+ nat64_reset_timeouts ();
/* Set up the interface address add/del callback */
cb4.function = nat64_ip4_add_del_interface_address_cb;
cb4.function_opaque = 0;
- vec_add1 (im->add_del_interface_address_callbacks, cb4);
- nm->ip4_main = im;
+ vec_add1 (nm->ip4_main->add_del_interface_address_callbacks, cb4);
/* Init counters */
nm->total_bibs.name = "total-bibs";
vlib_validate_simple_counter (&nm->total_sessions, 0);
vlib_zero_simple_counter (&nm->total_sessions, 0);
+ uword *p = hash_get_mem (tm->thread_registrations_by_name, "workers");
+ if (p)
+ {
+ vlib_thread_registration_t *tr;
+ tr = (vlib_thread_registration_t *) p[0];
+ if (tr)
+ {
+ nm->num_workers = tr->count;
+ nm->first_worker_index = tr->first_index;
+ }
+ }
+
+ if (nm->num_workers > 1)
+ {
+ int i;
+ uword *bitmap = 0;
+
+ for (i = 0; i < nm->num_workers; i++)
+ bitmap = clib_bitmap_set (bitmap, i, 1);
+
+ /* *INDENT-OFF* */
+ clib_bitmap_foreach (i, bitmap,
+ ({
+ vec_add1(nm->workers, i);
+ }));
+ /* *INDENT-ON* */
+
+ clib_bitmap_free (bitmap);
+
+ nm->port_per_thread = (0xffff - 1024) / _vec_len (nm->workers);
+ }
+
+ // TODO: ipfix needs to be separated from NAT base plugin
+ /* Init IPFIX logging */
+ //snat_ipfix_logging_init (vm);
+
#define _(x) \
nm->counters.in2out.x.name = #x; \
nm->counters.in2out.x.stat_segment_name = "/nat64/in2out/" #x; \
nm->counters.out2in.x.stat_segment_name = "/nat64/out2in/" #x;
foreach_nat_counter;
#undef _
- return 0;
+ return nat64_api_hookup (vm);
}
+VLIB_INIT_FUNCTION (nat64_init);
+
static void nat64_free_out_addr_and_port (struct nat64_db_s *db,
ip4_address_t * addr, u16 port,
u8 protocol);
-void
-nat64_set_hash (u32 bib_buckets, uword bib_memory_size, u32 st_buckets,
- uword st_memory_size)
+int
+nat64_init_hash (nat64_config_t c)
{
+ vlib_thread_main_t *tm = vlib_get_thread_main ();
nat64_main_t *nm = &nat64_main;
nat64_db_t *db;
+ int rv = 0;
+
+ vec_validate (nm->db, tm->n_vlib_mains - 1);
+
+ /* *INDENT-OFF* */
+ vec_foreach (db, nm->db)
+ {
+ if (nat64_db_init (db, c, nat64_free_out_addr_and_port))
+ {
+ nat64_log_err ("NAT64 DB init failed");
+ rv = 1;
+ }
+ }
+ /* *INDENT-ON* */
+
+ return rv;
+}
- nm->bib_buckets = bib_buckets;
- nm->bib_memory_size = bib_memory_size;
- nm->st_buckets = st_buckets;
- nm->st_memory_size = st_memory_size;
+int
+nat64_free_hash ()
+{
+ nat64_main_t *nm = &nat64_main;
+ nat64_db_t *db;
+ int rv = 0;
/* *INDENT-OFF* */
vec_foreach (db, nm->db)
{
- if (nat64_db_init (db, bib_buckets, bib_memory_size, st_buckets,
- st_memory_size, nat64_free_out_addr_and_port))
- nat_elog_err ("NAT64 DB init failed");
+ if (nat64_db_free (db))
+ {
+ nat64_log_err ("NAT64 DB free failed");
+ rv = 1;
+ }
}
/* *INDENT-ON* */
+
+ vec_free (nm->db);
+
+ return rv;
}
int
ip4_address_t * addr, u32 vrf_id, u8 is_add)
{
nat64_main_t *nm = &nat64_main;
- snat_address_t *a = 0;
- snat_interface_t *interface;
+ nat64_address_t *a = 0;
+ nat64_interface_t *interface;
int i;
nat64_db_t *db;
vlib_thread_main_t *tm = vlib_get_thread_main ();
if (vrf_id != ~0)
a->fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, vrf_id,
- nat_fib_src_hi);
+ nm->fib_src_hi);
#define _(N, id, n, s) \
clib_memset (a->busy_##n##_port_refcounts, 0, sizeof(a->busy_##n##_port_refcounts)); \
a->busy_##n##_ports = 0; \
return VNET_API_ERROR_NO_SUCH_ENTRY;
if (a->fib_index != ~0)
- fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP6, nat_fib_src_hi);
+ fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP6, nm->fib_src_hi);
/* Delete sessions using address */
- /* *INDENT-OFF* */
- vec_foreach (db, nm->db)
- {
- nat64_db_free_out_addr (thread_index, db, &a->addr);
- vlib_set_simple_counter (&nm->total_bibs, db - nm->db, 0,
- db->bib.bib_entries_num);
- vlib_set_simple_counter (&nm->total_sessions, db - nm->db, 0,
- db->st.st_entries_num);
- }
- /* *INDENT-ON* */
+ /* *INDENT-OFF* */
+ vec_foreach (db, nm->db)
+ {
+ nat64_db_free_out_addr (thread_index, db, &a->addr);
+ vlib_set_simple_counter (&nm->total_bibs, db - nm->db, 0,
+ db->bib.bib_entries_num);
+ vlib_set_simple_counter (&nm->total_sessions, db - nm->db, 0,
+ db->st.st_entries_num);
+ }
+ /* *INDENT-ON* */
vec_del1 (nm->addr_pool, i);
}
/* *INDENT-OFF* */
pool_foreach (interface, nm->interfaces,
({
- if (nat_interface_is_inside(interface))
+ if (nat64_interface_is_inside(interface))
continue;
- snat_add_del_addr_to_fib (addr, 32, interface->sw_if_index, is_add);
+ nat64_add_del_addr_to_fib (addr, 32, interface->sw_if_index, is_add);
break;
}));
/* *INDENT-ON* */
nat64_pool_addr_walk (nat64_pool_addr_walk_fn_t fn, void *ctx)
{
nat64_main_t *nm = &nat64_main;
- snat_address_t *a = 0;
+ nat64_address_t *a = 0;
/* *INDENT-OFF* */
vec_foreach (a, nm->addr_pool)
#undef _
}
+void
+nat64_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index,
+ int is_add)
+{
+ nat64_main_t *nm = &nat64_main;
+ fib_prefix_t prefix = {
+ .fp_len = p_len,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr = {
+ .ip4.as_u32 = addr->as_u32,
+ },
+ };
+ u32 fib_index = ip4_fib_table_get_index_for_sw_if_index (sw_if_index);
+
+ if (is_add)
+ fib_table_entry_update_one_path (fib_index,
+ &prefix,
+ nm->fib_src_low,
+ (FIB_ENTRY_FLAG_CONNECTED |
+ FIB_ENTRY_FLAG_LOCAL |
+ FIB_ENTRY_FLAG_EXCLUSIVE),
+ DPO_PROTO_IP4,
+ NULL,
+ sw_if_index,
+ ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
+ else
+ fib_table_entry_delete (fib_index, &prefix, nm->fib_src_low);
+}
+
int
-nat64_add_del_interface (u32 sw_if_index, u8 is_inside, u8 is_add)
+nat64_interface_add_del (u32 sw_if_index, u8 is_inside, u8 is_add)
{
vlib_main_t *vm = vlib_get_main ();
nat64_main_t *nm = &nat64_main;
- snat_interface_t *interface = 0, *i;
- snat_address_t *ap;
+ nat64_interface_t *interface = 0, *i;
+ nat64_address_t *ap;
const char *feature_name, *arc_name;
+ // TODO: is enabled ? we can't signal if it is not
+
/* Check if interface already exists */
/* *INDENT-OFF* */
pool_foreach (i, nm->interfaces,
nat64_validate_counters (nm, sw_if_index);
set_flags:
if (is_inside)
- interface->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
+ interface->flags |= NAT64_INTERFACE_FLAG_IS_INSIDE;
else
- interface->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE;
+ interface->flags |= NAT64_INTERFACE_FLAG_IS_OUTSIDE;
nm->total_enabled_count++;
vlib_process_signal_event (vm,
- nm->nat64_expire_walk_node_index,
+ nm->expire_walk_node_index,
NAT64_CLEANER_RESCHEDULE, 0);
}
if (!interface)
return VNET_API_ERROR_NO_SUCH_ENTRY;
- if ((nat_interface_is_inside (interface)
- && nat_interface_is_outside (interface)))
+ if ((nat64_interface_is_inside (interface)
+ && nat64_interface_is_outside (interface)))
interface->flags &=
- is_inside ? ~NAT_INTERFACE_FLAG_IS_INSIDE :
- ~NAT_INTERFACE_FLAG_IS_OUTSIDE;
+ is_inside ? ~NAT64_INTERFACE_FLAG_IS_INSIDE :
+ ~NAT64_INTERFACE_FLAG_IS_OUTSIDE;
else
pool_put (nm->interfaces, interface);
{
/* *INDENT-OFF* */
vec_foreach (ap, nm->addr_pool)
- snat_add_del_addr_to_fib(&ap->addr, 32, sw_if_index, is_add);
+ nat64_add_del_addr_to_fib (&ap->addr, 32, sw_if_index, is_add);
/* *INDENT-ON* */
}
- if (nm->sm->num_workers > 1)
+ if (nm->num_workers > 1)
{
feature_name =
is_inside ? "nat64-in2out-handoff" : "nat64-out2in-handoff";
nat64_interfaces_walk (nat64_interface_walk_fn_t fn, void *ctx)
{
nat64_main_t *nm = &nat64_main;
- snat_interface_t *i = 0;
+ nat64_interface_t *i = 0;
/* *INDENT-OFF* */
pool_foreach (i, nm->interfaces,
/* *INDENT-ON* */
}
+// TODO: plugin independent
+static_always_inline u16
+nat64_random_port (u16 min, u16 max)
+{
+ nat64_main_t *nm = &nat64_main;
+ u32 rwide;
+ u16 r;
+
+ rwide = random_u32 (&nm->random_seed);
+ r = rwide & 0xFFFF;
+ if (r >= min && r <= max)
+ return r;
+
+ return min + (rwide % (max - min + 1));
+}
+
+static_always_inline int
+nat64_alloc_addr_and_port_default (nat64_address_t * addresses,
+ u32 fib_index,
+ u32 thread_index,
+ nat_protocol_t proto,
+ ip4_address_t * addr,
+ u16 * port,
+ u16 port_per_thread, u32 nat_thread_index)
+{
+ int i;
+ nat64_address_t *a, *ga = 0;
+ u32 portnum;
+
+ for (i = 0; i < vec_len (addresses); i++)
+ {
+ a = addresses + i;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ if (a->busy_##n##_ports_per_thread[thread_index] < port_per_thread) \
+ { \
+ if (a->fib_index == fib_index) \
+ { \
+ while (1) \
+ { \
+ portnum = (port_per_thread * \
+ nat_thread_index) + \
+ nat64_random_port(0, port_per_thread - 1) + 1024; \
+ if (a->busy_##n##_port_refcounts[portnum]) \
+ continue; \
+ --a->busy_##n##_port_refcounts[portnum]; \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ *addr = a->addr; \
+ *port = clib_host_to_net_u16(portnum); \
+ return 0; \
+ } \
+ } \
+ else if (a->fib_index == ~0) \
+ { \
+ ga = a; \
+ } \
+ } \
+ break;
+ foreach_nat_protocol
+#undef _
+ default:
+ return 1;
+ }
+
+ }
+
+ if (ga)
+ {
+ a = ga;
+ switch (proto)
+ {
+#define _(N, j, n, s) \
+ case NAT_PROTOCOL_##N: \
+ while (1) \
+ { \
+ portnum = (port_per_thread * \
+ nat_thread_index) + \
+ nat64_random_port(0, port_per_thread - 1) + 1024; \
+ if (a->busy_##n##_port_refcounts[portnum]) \
+ continue; \
+ ++a->busy_##n##_port_refcounts[portnum]; \
+ a->busy_##n##_ports_per_thread[thread_index]++; \
+ a->busy_##n##_ports++; \
+ *addr = a->addr; \
+ *port = clib_host_to_net_u16(portnum); \
+ return 0; \
+ }
+ break;
+ foreach_nat_protocol
+#undef _
+ default:
+ return 1;
+ }
+ }
+
+ /* Totally out of translations to use... */
+ //snat_ipfix_logging_addresses_exhausted (thread_index, 0);
+ return 1;
+}
+
int
nat64_alloc_out_addr_and_port (u32 fib_index, nat_protocol_t proto,
ip4_address_t * addr, u16 * port,
u32 thread_index)
{
nat64_main_t *nm = &nat64_main;
- snat_main_t *sm = nm->sm;
u32 worker_index = 0;
int rv;
- if (sm->num_workers > 1)
- worker_index = thread_index - sm->first_worker_index;
+ if (nm->num_workers > 1)
+ worker_index = thread_index - nm->first_worker_index;
- rv =
- sm->alloc_addr_and_port (nm->addr_pool, fib_index, thread_index,
- proto, addr, port, sm->port_per_thread,
- worker_index);
+ rv = nat64_alloc_addr_and_port_default (nm->addr_pool, fib_index,
+ thread_index,
+ proto, addr, port,
+ nm->port_per_thread, worker_index);
return rv;
}
u16 port, u8 protocol)
{
nat64_main_t *nm = &nat64_main;
- int i;
- snat_address_t *a;
u32 thread_index = db - nm->db;
nat_protocol_t proto = ip_proto_to_nat_proto (protocol);
u16 port_host_byte_order = clib_net_to_host_u16 (port);
+ nat64_address_t *a;
+ int i;
for (i = 0; i < vec_len (nm->addr_pool); i++)
{
foreach_nat_protocol
#undef _
default:
- nat_elog_notice ("unknown protocol");
+ nat_elog_str ("unknown protocol");
return;
}
break;
nat64_main_t *nm = &nat64_main;
nat64_db_bib_entry_t *bibe;
u32 fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, vrf_id,
- nat_fib_src_hi);
+ nm->fib_src_hi);
nat_protocol_t p = ip_proto_to_nat_proto (proto);
ip46_address_t addr;
int i;
- snat_address_t *a;
+ nat64_address_t *a;
u32 thread_index = 0;
nat64_db_t *db;
nat64_static_bib_to_update_t *static_bib;
vlib_main_t *worker_vm;
u32 *to_be_free = 0, *index;
- if (nm->sm->num_workers > 1)
+ if (nm->num_workers > 1)
{
thread_index = nat64_get_worker_in2out (in_addr);
db = &nm->db[thread_index];
}
else
- db = &nm->db[nm->sm->num_workers];
+ db = &nm->db[nm->num_workers];
addr.as_u64[0] = in_addr->as_u64[0];
addr.as_u64[1] = in_addr->as_u64[1];
return VNET_API_ERROR_VALUE_EXIST;
/* outside port must be assigned to same thread as internall address */
- if ((out_port > 1024) && (nm->sm->num_workers > 1))
+ if ((out_port > 1024) && (nm->num_workers > 1))
{
- if (thread_index != ((out_port - 1024) / nm->sm->port_per_thread))
+ if (thread_index != ((out_port - 1024) / nm->port_per_thread))
return VNET_API_ERROR_INVALID_VALUE_2;
}
}
break;
}
- if (!nm->sm->num_workers)
+ if (!nm->num_workers)
{
bibe =
nat64_db_bib_entry_create (thread_index, db, in_addr, out_addr,
if (!bibe)
return VNET_API_ERROR_NO_SUCH_ENTRY;
- if (!nm->sm->num_workers)
+ if (!nm->num_workers)
{
nat64_db_bib_entry_free (thread_index, db, bibe);
vlib_set_simple_counter (&nm->total_bibs, thread_index, 0,
}
}
- if (nm->sm->num_workers)
+ if (nm->num_workers)
{
/* *INDENT-OFF* */
pool_foreach (static_bib, nm->static_bibs,
nat64_main_t *nm = &nat64_main;
if (timeout == 0)
- nm->udp_timeout = SNAT_UDP_TIMEOUT;
+ nm->udp_timeout = NAT_UDP_TIMEOUT;
else
nm->udp_timeout = timeout;
nat64_main_t *nm = &nat64_main;
if (timeout == 0)
- nm->icmp_timeout = SNAT_ICMP_TIMEOUT;
+ nm->icmp_timeout = NAT_ICMP_TIMEOUT;
else
nm->icmp_timeout = timeout;
return 0;
}
+void
+nat64_reset_timeouts ()
+{
+ nat64_main_t *nm = &nat64_main;
+
+ nm->udp_timeout = NAT_UDP_TIMEOUT;
+ nm->icmp_timeout = NAT_ICMP_TIMEOUT;
+ nm->tcp_est_timeout = NAT_TCP_ESTABLISHED_TIMEOUT;
+ nm->tcp_trans_timeout = NAT_TCP_TRANSITORY_TIMEOUT;
+}
+
u32
nat64_get_icmp_timeout (void)
{
nat64_main_t *nm = &nat64_main;
if (trans == 0)
- nm->tcp_trans_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
+ nm->tcp_trans_timeout = NAT_TCP_TRANSITORY_TIMEOUT;
else
nm->tcp_trans_timeout = trans;
if (est == 0)
- nm->tcp_est_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
+ nm->tcp_est_timeout = NAT_TCP_ESTABLISHED_TIMEOUT;
else
nm->tcp_est_timeout = est;
vec_add2 (nm->pref64, p, 1);
p->fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, vrf_id,
- nat_fib_src_hi);
+ nm->fib_src_hi);
p->vrf_id = vrf_id;
}
if (!p)
return VNET_API_ERROR_NO_SUCH_ENTRY;
+ // TODO: missing fib_table_unlock ?
+
vec_del1 (nm->pref64, i);
}
ip6->as_u32[3] = ip4->as_u32;
break;
default:
- nat_elog_notice ("invalid prefix length");
+ nat_elog_str ("invalid prefix length");
break;
}
}
ip4->as_u32 = ip6->as_u32[3];
break;
default:
- nat_elog_notice ("invalid prefix length");
+ nat_elog_str ("invalid prefix length");
break;
}
}
{
nat64_main_t *nm = &nat64_main;
u32 thread_index = vm->thread_index;
- nat64_db_t *db = &nm->db[thread_index];
- u32 now = (u32) vlib_time_now (vm);
+ nat64_db_t *db;
+ u32 now;
+
+ // TODO: barier sync on plugin enabled
+ if (plugin_enabled () == 0)
+ return 0;
+
+ db = &nm->db[thread_index];
+ now = (u32) vlib_time_now (vm);
nad64_db_st_free_expired (thread_index, db, now);
vlib_set_simple_counter (&nm->total_bibs, thread_index, 0,
db->bib.bib_entries_num);
vlib_set_simple_counter (&nm->total_sessions, thread_index, 0,
db->st.st_entries_num);
-
return 0;
}
-static vlib_node_registration_t nat64_expire_worker_walk_node;
-
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat64_expire_worker_walk_node, static) = {
.function = nat64_expire_worker_walk_fn,
};
/* *INDENT-ON* */
-static vlib_node_registration_t nat64_expire_walk_node;
-
/**
* @brief Centralized process to drive per worker expire walk.
*/
int i;
uword event_type, *event_data = 0;
- nm->nat64_expire_walk_node_index = nat64_expire_walk_node.index;
-
if (vec_len (vlib_mains) == 0)
vec_add1 (worker_vms, vm);
else
case NAT64_CLEANER_RESCHEDULE:
break;
default:
- nat_elog_notice_X1 ("unknown event %d", "i4", event_type);
+ nat64_log_err ("unknown event %u", event_type);
break;
}
{
worker_vm = worker_vms[i];
vlib_node_set_interrupt_pending (worker_vm,
- nat64_expire_worker_walk_node.index);
+ nm->expire_worker_walk_node_index);
}
}
return 0;
}
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (nat64_expire_walk_node, static) = {
- .function = nat64_expire_walk_fn,
- .type = VLIB_NODE_TYPE_PROCESS,
- .name = "nat64-expire-walk",
-};
-/* *INDENT-ON* */
+void
+nat64_create_expire_walk_process ()
+{
+ nat64_main_t *nm = &nat64_main;
+
+ if (nm->expire_walk_node_index)
+ return;
+ nm->expire_walk_node_index = vlib_process_create (vlib_get_main (),
+ "nat64-expire-walk",
+ nat64_expire_walk_fn,
+ 16 /* stack_bytes */ );
+}
+
+int
+nat64_plugin_enable (nat64_config_t c)
+{
+ nat64_main_t *nm = &nat64_main;
+
+ if (plugin_enabled () == 1)
+ {
+ nat64_log_err ("plugin already enabled!");
+ return 1;
+ }
+
+ if (!c.bib_buckets)
+ c.bib_buckets = 1024;
+
+ if (!c.bib_memory_size)
+ c.bib_memory_size = 128 << 20;
+
+ if (!c.st_buckets)
+ c.st_buckets = 2048;
+
+ if (!c.st_memory_size)
+ c.st_memory_size = 256 << 20;
+
+ nm->config = c;
+
+ if (nat64_init_hash (c))
+ {
+ nat64_log_err ("initializing hashes failed!");
+ return 1;
+ }
+
+ nat64_create_expire_walk_process ();
+
+ nm->enabled = 1;
+ return 0;
+}
+
+int
+nat64_plugin_disable ()
+{
+ nat64_main_t *nm = &nat64_main;
+ vnet_main_t *vnm = vnet_get_main ();
+ int rv = 0;
+
+ nat64_address_t *a;
+ nat64_interface_t *i, *interfaces;
+
+ if (plugin_enabled () == 0)
+ {
+ nat64_log_err ("plugin already disabled!");
+ return 1;
+ }
+ nm->enabled = 0;
+
+ interfaces = vec_dup (nm->interfaces);
+ vec_foreach (i, interfaces)
+ {
+ rv = nat64_interface_add_del (i->sw_if_index, i->flags, 1);
+ if (rv)
+ {
+ nat64_log_err ("%U %s interface del failed",
+ unformat_vnet_sw_interface,
+ i->flags & NAT64_INTERFACE_FLAG_IS_INSIDE ?
+ "inside" : "outside", vnm, i->sw_if_index);
+ }
+ }
+ vec_free (interfaces);
+ pool_free (nm->interfaces);
+
+ nat64_reset_timeouts ();
+
+ if (nat64_free_hash ())
+ {
+ rv = 1;
+ nat64_log_err ("freeing hashes failed!");
+ }
+
+ // TODO: based on nat64_add_del_prefix fib_table_unlock is not called
+ vec_free (nm->pref64);
+
+ if (vec_len (nm->addr_pool))
+ {
+ vec_foreach (a, nm->addr_pool)
+ {
+ if (a->fib_index != ~0)
+ fib_table_unlock (a->fib_index, FIB_PROTOCOL_IP6, nm->fib_src_hi);
+ }
+ vec_free (nm->addr_pool);
+ }
+ return rv;
+}
+
+uword
+unformat_nat_protocol (unformat_input_t * input, va_list * args)
+{
+ u32 *r = va_arg (*args, u32 *);
+
+ if (0);
+#define _(N, i, n, s) else if (unformat (input, s)) *r = NAT_PROTOCOL_##N;
+ foreach_nat_protocol
+#undef _
+ else
+ return 0;
+ return 1;
+}
+
+u8 *
+format_nat_protocol (u8 * s, va_list * args)
+{
+ u32 i = va_arg (*args, u32);
+ u8 *t = 0;
+
+ switch (i)
+ {
+#define _(N, j, n, str) case NAT_PROTOCOL_##N: t = (u8 *) str; break;
+ foreach_nat_protocol
+#undef _
+ default:
+ s = format (s, "unknown");
+ return s;
+ }
+ s = format (s, "%s", t);
+ return s;
+}
/*
* fd.io coding-style-patch-verification: ON
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT64 global declarations
- */
#ifndef __included_nat64_h__
#define __included_nat64_h__
-#include <nat/nat.h>
-#include <nat/nat64_db.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ip/icmp46_packet.h>
+#include <vnet/api_errno.h>
+#include <vnet/fib/fib_source.h>
+#include <vppinfra/dlist.h>
+#include <vppinfra/error.h>
+#include <vlibapi/api.h>
+#include <vlib/log.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/fib/ip4_fib.h>
+#include <vnet/ip/reass/ip4_sv_reass.h>
+
+#include <nat/lib/lib.h>
+#include <nat/lib/inlines.h>
+#include <nat/lib/nat_inlines.h>
+
+#include <nat/nat64/nat64_db.h>
+
+typedef struct
+{
+ u16 identifier;
+ u16 sequence;
+} icmp_echo_header_t;
+
+typedef struct
+{
+ u16 src_port, dst_port;
+} tcp_udp_header_t;
#define foreach_nat64_tcp_ses_state \
_(0, CLOSED, "closed") \
typedef struct
{
+ ip4_address_t addr;
+ u32 fib_index;
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ u16 busy_##n##_ports; \
+ u16 * busy_##n##_ports_per_thread; \
+ u32 busy_##n##_port_refcounts[65535];
+ foreach_nat_protocol
+#undef _
+/* *INDENT-ON* */
+} nat64_address_t;
+
+typedef struct
+{
+ u32 sw_if_index;
+ u8 flags;
+} nat64_interface_t;
+
+typedef struct
+{
+ u32 enabled;
+
+ nat64_config_t config;
+
+ /* API message ID base */
+ u16 msg_id_base;
+
+ /* log class */
+ vlib_log_class_t log_class;
+
/** Interface pool */
- snat_interface_t *interfaces;
+ nat64_interface_t *interfaces;
/** Address pool vector */
- snat_address_t *addr_pool;
+ nat64_address_t *addr_pool;
/** sw_if_indices whose interface addresses should be auto-added */
u32 *auto_add_sw_if_indices;
/* Total count of interfaces enabled */
u32 total_enabled_count;
- /* The process node which orcherstrates the cleanup */
- u32 nat64_expire_walk_node_index;
+
+ /* Expire walk process node index */
+ u32 expire_walk_node_index;
+
+ /* Expire worker walk process node index */
+ u32 expire_worker_walk_node_index;
/* counters/gauges */
vlib_simple_counter_main_t total_bibs;
u32 out2in_node_index;
- ip4_main_t *ip4_main;
- snat_main_t *sm;
-
#define _(x) vlib_simple_counter_main_t x;
struct
{
} counters;
#undef _
+ /* convenience */
+ ip4_main_t *ip4_main;
+
+ /* required */
+ vnet_main_t *vnet_main;
+
+ /* Randomize port allocation order */
+ u32 random_seed;
+
+ /* TCP MSS clamping */
+ u16 mss_clamping;
+
+ fib_source_t fib_src_hi;
+ fib_source_t fib_src_low;
+
+ /* Thread settings */
+ u32 num_workers;
+ u32 first_worker_index;
+ u32 *workers;
+ u16 port_per_thread;
+
} nat64_main_t;
extern nat64_main_t nat64_main;
* @brief Call back function when walking addresses in NAT64 pool, non-zero
* return value stop walk.
*/
-typedef int (*nat64_pool_addr_walk_fn_t) (snat_address_t * addr, void *ctx);
+typedef int (*nat64_pool_addr_walk_fn_t) (nat64_address_t * addr, void *ctx);
/**
* @brief Walk NAT64 pool.
*
* @returns 0 on success, non-zero value otherwise.
*/
-int nat64_add_del_interface (u32 sw_if_index, u8 is_inside, u8 is_add);
+int nat64_interface_add_del (u32 sw_if_index, u8 is_inside, u8 is_add);
/**
* @brief Call back function when walking interfaces with NAT64 feature,
* non-zero return value stop walk.
*/
-typedef int (*nat64_interface_walk_fn_t) (snat_interface_t * i, void *ctx);
+typedef int (*nat64_interface_walk_fn_t) (nat64_interface_t * i, void *ctx);
/**
* @brief Walk NAT64 interfaces.
*/
u32 nat64_get_worker_out2in (vlib_buffer_t * b, ip4_header_t * ip);
+/* NAT64 interface flags */
+#define NAT64_INTERFACE_FLAG_IS_INSIDE 1
+#define NAT64_INTERFACE_FLAG_IS_OUTSIDE 2
+
+/** \brief Check if NAT64 interface is inside.
+ @param i NAT64 interface
+ @return 1 if inside interface
+*/
+#define nat64_interface_is_inside(i) i->flags & NAT64_INTERFACE_FLAG_IS_INSIDE
+
+/** \brief Check if NAT64 interface is outside.
+ @param i NAT64 interface
+ @return 1 if outside interface
+*/
+#define nat64_interface_is_outside(i) i->flags & NAT64_INTERFACE_FLAG_IS_OUTSIDE
+
+static_always_inline u8
+plugin_enabled ()
+{
+ nat64_main_t *nm = &nat64_main;
+ return nm->enabled;
+}
+
+void
+nat64_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index,
+ int is_add);
+
+int nat64_plugin_enable (nat64_config_t c);
+int nat64_plugin_disable ();
+void nat64_reset_timeouts ();
+
+format_function_t format_nat_protocol;
+unformat_function_t unformat_nat_protocol;
+
+/* logging */
+#define nat64_log_err(...) \
+ vlib_log(VLIB_LOG_LEVEL_ERR, nat64_main.log_class, __VA_ARGS__)
+#define nat64_log_warn(...) \
+ vlib_log(VLIB_LOG_LEVEL_WARNING, nat64_main.log_class, __VA_ARGS__)
+#define nat64_log_notice(...) \
+ vlib_log(VLIB_LOG_LEVEL_NOTICE, nat64_main.log_class, __VA_ARGS__)
+#define nat64_log_info(...) \
+ vlib_log(VLIB_LOG_LEVEL_INFO, nat64_main.log_class, __VA_ARGS__)
+#define nat64_log_debug(...)\
+ vlib_log(VLIB_LOG_LEVEL_DEBUG, nat64_main.log_class, __VA_ARGS__)
+
+clib_error_t *nat64_api_hookup (vlib_main_t * vm);
+
#endif /* __included_nat64_h__ */
/*
--- /dev/null
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/ip/ip_types_api.h>
+#include <vlibmemory/api.h>
+#include <nat/nat64/nat64.h>
+#include <nat/nat64/nat64.api_enum.h>
+#include <nat/nat64/nat64.api_types.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ip/ip.h>
+
+#define REPLY_MSG_ID_BASE nm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+ vl_api_nat64_plugin_enable_disable_t_handler
+ (vl_api_nat64_plugin_enable_disable_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_plugin_enable_disable_reply_t *rmp;
+ nat64_config_t c = { 0 };
+ int rv = 0;
+ if (mp->enable)
+ {
+ c.bib_buckets = ntohl (mp->bib_buckets);
+ c.bib_memory_size = ntohl (mp->bib_memory_size);
+ c.st_buckets = ntohl (mp->st_buckets);
+ c.st_memory_size = ntohl (mp->st_memory_size);
+ rv = nat64_plugin_enable (c);
+ }
+ else
+ {
+ rv = nat64_plugin_disable ();
+ }
+ REPLY_MACRO (VL_API_NAT64_PLUGIN_ENABLE_DISABLE_REPLY);
+}
+
+static void
+vl_api_nat64_set_timeouts_t_handler (vl_api_nat64_set_timeouts_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_set_timeouts_reply_t *rmp;
+ int rv = 0;
+
+ nm->udp_timeout = ntohl (mp->udp);
+ nm->tcp_est_timeout = ntohl (mp->tcp_established);
+ nm->tcp_trans_timeout = ntohl (mp->tcp_transitory);
+ nm->icmp_timeout = ntohl (mp->icmp);
+
+ REPLY_MACRO (VL_API_NAT64_SET_TIMEOUTS_REPLY);
+}
+
+static void
+vl_api_nat64_get_timeouts_t_handler (vl_api_nat64_get_timeouts_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_get_timeouts_reply_t *rmp;
+ int rv = 0;
+
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_NAT64_GET_TIMEOUTS_REPLY,
+ ({
+ rmp->udp = htonl (nm->udp_timeout);
+ rmp->tcp_established = htonl (nm->tcp_est_timeout);
+ rmp->tcp_transitory = htonl (nm->tcp_trans_timeout);
+ rmp->icmp = htonl (nm->icmp_timeout);
+ }))
+ /* *INDENT-ON* */
+}
+
+static void
+ vl_api_nat64_add_del_pool_addr_range_t_handler
+ (vl_api_nat64_add_del_pool_addr_range_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_add_del_pool_addr_range_reply_t *rmp;
+ int rv = 0;
+ ip4_address_t this_addr;
+ u32 start_host_order, end_host_order;
+ u32 vrf_id;
+ int i, count;
+ u32 *tmp;
+
+ tmp = (u32 *) mp->start_addr;
+ start_host_order = clib_host_to_net_u32 (tmp[0]);
+ tmp = (u32 *) mp->end_addr;
+ end_host_order = clib_host_to_net_u32 (tmp[0]);
+
+ count = (end_host_order - start_host_order) + 1;
+
+ vrf_id = clib_host_to_net_u32 (mp->vrf_id);
+
+ memcpy (&this_addr.as_u8, mp->start_addr, 4);
+
+ for (i = 0; i < count; i++)
+ {
+ if ((rv = nat64_add_del_pool_addr (0, &this_addr, vrf_id, mp->is_add)))
+ goto send_reply;
+
+ increment_v4_address (&this_addr);
+ }
+
+send_reply:
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_POOL_ADDR_RANGE_REPLY);
+}
+
+typedef struct nat64_api_walk_ctx_t_
+{
+ vl_api_registration_t *reg;
+ u32 context;
+ nat64_db_t *db;
+} nat64_api_walk_ctx_t;
+
+static int
+nat64_api_pool_walk (nat64_address_t * a, void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_pool_addr_details_t *rmp;
+ nat64_api_walk_ctx_t *ctx = arg;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_POOL_ADDR_DETAILS + nm->msg_id_base);
+ clib_memcpy (rmp->address, &(a->addr), 4);
+ if (a->fib_index != ~0)
+ {
+ fib_table_t *fib = fib_table_get (a->fib_index, FIB_PROTOCOL_IP6);
+ if (!fib)
+ return -1;
+ rmp->vrf_id = ntohl (fib->ft_table_id);
+ }
+ else
+ rmp->vrf_id = ~0;
+ rmp->context = ctx->context;
+
+ vl_api_send_msg (ctx->reg, (u8 *) rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_pool_addr_dump_t_handler (vl_api_nat64_pool_addr_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .reg = reg,
+ .context = mp->context,
+ };
+
+ nat64_pool_addr_walk (nat64_api_pool_walk, &ctx);
+}
+
+static void
+vl_api_nat64_add_del_interface_t_handler (vl_api_nat64_add_del_interface_t *
+ mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_add_del_interface_reply_t *rmp;
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ rv =
+ nat64_interface_add_del (ntohl (mp->sw_if_index),
+ mp->flags & NAT_API_IS_INSIDE, mp->is_add);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_INTERFACE_REPLY);
+}
+
+static int
+nat64_api_interface_walk (nat64_interface_t * i, void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_interface_details_t *rmp;
+ nat64_api_walk_ctx_t *ctx = arg;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_INTERFACE_DETAILS + nm->msg_id_base);
+ rmp->sw_if_index = ntohl (i->sw_if_index);
+
+ if (nat64_interface_is_inside (i))
+ rmp->flags |= NAT_API_IS_INSIDE;
+ if (nat64_interface_is_outside (i))
+ rmp->flags |= NAT_API_IS_OUTSIDE;
+
+ rmp->context = ctx->context;
+
+ vl_api_send_msg (ctx->reg, (u8 *) rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_interface_dump_t_handler (vl_api_nat64_interface_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .reg = reg,
+ .context = mp->context,
+ };
+
+ nat64_interfaces_walk (nat64_api_interface_walk, &ctx);
+}
+
+static void
+ vl_api_nat64_add_del_static_bib_t_handler
+ (vl_api_nat64_add_del_static_bib_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_add_del_static_bib_reply_t *rmp;
+ ip6_address_t in_addr;
+ ip4_address_t out_addr;
+ int rv = 0;
+
+ memcpy (&in_addr.as_u8, mp->i_addr, 16);
+ memcpy (&out_addr.as_u8, mp->o_addr, 4);
+
+ rv =
+ nat64_add_del_static_bib_entry (&in_addr, &out_addr,
+ clib_net_to_host_u16 (mp->i_port),
+ clib_net_to_host_u16 (mp->o_port),
+ mp->proto,
+ clib_net_to_host_u32 (mp->vrf_id),
+ mp->is_add);
+
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_STATIC_BIB_REPLY);
+}
+
+static int
+nat64_api_bib_walk (nat64_db_bib_entry_t * bibe, void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_bib_details_t *rmp;
+ nat64_api_walk_ctx_t *ctx = arg;
+ fib_table_t *fib;
+
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ if (!fib)
+ return -1;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_BIB_DETAILS + nm->msg_id_base);
+ rmp->context = ctx->context;
+ clib_memcpy (rmp->i_addr, &(bibe->in_addr), 16);
+ clib_memcpy (rmp->o_addr, &(bibe->out_addr), 4);
+ rmp->i_port = bibe->in_port;
+ rmp->o_port = bibe->out_port;
+ rmp->vrf_id = ntohl (fib->ft_table_id);
+ rmp->proto = bibe->proto;
+ if (bibe->is_static)
+ rmp->flags |= NAT_API_IS_STATIC;
+ rmp->ses_num = ntohl (bibe->ses_num);
+
+ vl_api_send_msg (ctx->reg, (u8 *) rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_bib_dump_t_handler (vl_api_nat64_bib_dump_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_registration_t *reg;
+ nat64_db_t *db;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .reg = reg,
+ .context = mp->context,
+ };
+
+ /* *INDENT-OFF* */
+ vec_foreach (db, nm->db)
+ nat64_db_bib_walk (db, mp->proto, nat64_api_bib_walk, &ctx);
+ /* *INDENT-ON* */
+}
+
+static int
+nat64_api_st_walk (nat64_db_st_entry_t * ste, void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_st_details_t *rmp;
+ nat64_api_walk_ctx_t *ctx = arg;
+ nat64_db_bib_entry_t *bibe;
+ fib_table_t *fib;
+
+ bibe = nat64_db_bib_entry_by_index (ctx->db, ste->proto, ste->bibe_index);
+ if (!bibe)
+ return -1;
+
+ fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ if (!fib)
+ return -1;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_ST_DETAILS + nm->msg_id_base);
+ rmp->context = ctx->context;
+ clib_memcpy (rmp->il_addr, &(bibe->in_addr), 16);
+ clib_memcpy (rmp->ol_addr, &(bibe->out_addr), 4);
+ rmp->il_port = bibe->in_port;
+ rmp->ol_port = bibe->out_port;
+ clib_memcpy (rmp->ir_addr, &(ste->in_r_addr), 16);
+ clib_memcpy (rmp->or_addr, &(ste->out_r_addr), 4);
+ rmp->il_port = ste->r_port;
+ rmp->vrf_id = ntohl (fib->ft_table_id);
+ rmp->proto = ste->proto;
+
+ vl_api_send_msg (ctx->reg, (u8 *) rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_st_dump_t_handler (vl_api_nat64_st_dump_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_registration_t *reg;
+ nat64_db_t *db;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .reg = reg,
+ .context = mp->context,
+ };
+
+ /* *INDENT-OFF* */
+ vec_foreach (db, nm->db)
+ {
+ ctx.db = db;
+ nat64_db_st_walk (db, mp->proto, nat64_api_st_walk, &ctx);
+ }
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_nat64_add_del_prefix_t_handler (vl_api_nat64_add_del_prefix_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_add_del_prefix_reply_t *rmp;
+ ip6_address_t prefix;
+ int rv = 0;
+
+ memcpy (&prefix.as_u8, mp->prefix.address, 16);
+
+ rv =
+ nat64_add_del_prefix (&prefix, mp->prefix.len,
+ clib_net_to_host_u32 (mp->vrf_id), mp->is_add);
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_PREFIX_REPLY);
+}
+
+static int
+nat64_api_prefix_walk (nat64_prefix_t * p, void *arg)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_prefix_details_t *rmp;
+ nat64_api_walk_ctx_t *ctx = arg;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ clib_memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_NAT64_PREFIX_DETAILS + nm->msg_id_base);
+ clib_memcpy (rmp->prefix.address, &(p->prefix), 16);
+ rmp->prefix.len = p->plen;
+ rmp->vrf_id = ntohl (p->vrf_id);
+ rmp->context = ctx->context;
+
+ vl_api_send_msg (ctx->reg, (u8 *) rmp);
+
+ return 0;
+}
+
+static void
+vl_api_nat64_prefix_dump_t_handler (vl_api_nat64_prefix_dump_t * mp)
+{
+ vl_api_registration_t *reg;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ nat64_api_walk_ctx_t ctx = {
+ .reg = reg,
+ .context = mp->context,
+ };
+
+ nat64_prefix_walk (nat64_api_prefix_walk, &ctx);
+}
+
+static void
+ vl_api_nat64_add_del_interface_addr_t_handler
+ (vl_api_nat64_add_del_interface_addr_t * mp)
+{
+ nat64_main_t *nm = &nat64_main;
+ vl_api_nat64_add_del_interface_addr_reply_t *rmp;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ rv = nat64_add_interface_address (sw_if_index, mp->is_add);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_NAT64_ADD_DEL_INTERFACE_ADDR_REPLY);
+}
+
+/* API definitions */
+#include <vnet/format_fns.h>
+#include <nat/nat64/nat64.api.c>
+
+/* Set up the API message handling tables */
+clib_error_t *
+nat64_api_hookup (vlib_main_t * vm)
+{
+ nat64_main_t *nm = &nat64_main;
+ nm->msg_id_base = setup_message_id_table ();
+ return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT64 CLI
- */
-#include <nat/nat64.h>
-#include <nat/nat.h>
-#include <nat/nat_inlines.h>
#include <vnet/fib/fib_table.h>
+#include <nat/nat64/nat64.h>
+
+static clib_error_t *
+nat64_plugin_enable_disable_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u8 enable = 0, is_set = 0;
+ clib_error_t *error = 0;
+ nat64_config_t c = { 0 };
+
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (!is_set && unformat (line_input, "enable"))
+ {
+ unformat (line_input, "bib-buckets %u", &c.bib_buckets);
+ unformat (line_input, "bib-memory %u", &c.bib_memory_size);
+ unformat (line_input, "st-buckets %u", &c.st_buckets);
+ unformat (line_input, "st-memory %u", &c.st_memory_size);
+ enable = 1;
+ }
+ else if (!is_set && unformat (line_input, "disable"));
+ else
+ {
+ error = clib_error_return (0, "unknown input '%U'",
+ format_unformat_error, line_input);
+ goto done;
+ }
+ is_set = 1;
+ }
+
+ if (enable)
+ {
+ if (nat64_plugin_enable (c))
+ error = clib_error_return (0, "plugin enable failed");
+ }
+ else
+ {
+ if (nat64_plugin_disable ())
+ error = clib_error_return (0, "plugin disable failed");
+ }
+done:
+ unformat_free (line_input);
+ return error;
+}
static clib_error_t *
nat64_add_del_pool_addr_command_fn (vlib_main_t * vm,
}
static int
-nat64_cli_pool_walk (snat_address_t * ap, void *ctx)
+nat64_cli_pool_walk (nat64_address_t * ap, void *ctx)
{
vlib_main_t *vm = ctx;
for (i = 0; i < vec_len (inside_sw_if_indices); i++)
{
sw_if_index = inside_sw_if_indices[i];
- rv = nat64_add_del_interface (sw_if_index, 1, is_add);
+ rv = nat64_interface_add_del (sw_if_index, 1, is_add);
switch (rv)
{
case VNET_API_ERROR_NO_SUCH_ENTRY:
for (i = 0; i < vec_len (outside_sw_if_indices); i++)
{
sw_if_index = outside_sw_if_indices[i];
- rv = nat64_add_del_interface (sw_if_index, 0, is_add);
+ rv = nat64_interface_add_del (sw_if_index, 0, is_add);
switch (rv)
{
case VNET_API_ERROR_NO_SUCH_ENTRY:
}
static int
-nat64_cli_interface_walk (snat_interface_t * i, void *ctx)
+nat64_cli_interface_walk (nat64_interface_t * i, void *ctx)
{
vlib_main_t *vm = ctx;
vnet_main_t *vnm = vnet_get_main ();
vlib_cli_output (vm, " %U %s", format_vnet_sw_if_index_name, vnm,
i->sw_if_index,
- (nat_interface_is_inside (i)
- && nat_interface_is_outside (i)) ? "in out" :
- nat_interface_is_inside (i) ? "in" : "out");
+ (nat64_interface_is_inside (i)
+ && nat64_interface_is_outside (i)) ? "in out" :
+ nat64_interface_is_inside (i) ? "in" : "out");
return 0;
}
nat64_add_del_prefix_command_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
+ nat64_main_t *nm = &nat64_main;
vnet_main_t *vnm = vnet_get_main ();
clib_error_t *error = 0;
unformat_input_t _line_input, *line_input = &_line_input;
{
fib_index =
fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6,
- vrf_id, nat_fib_src_hi);
+ vrf_id, nm->fib_src_hi);
fib_table_entry_update_one_path (fib_index, &fibpfx,
- nat_fib_src_hi,
+ nm->fib_src_hi,
FIB_ENTRY_FLAG_NONE,
DPO_PROTO_IP6, NULL,
sw_if_index, ~0, 0,
{
fib_index = fib_table_find (FIB_PROTOCOL_IP6, vrf_id);
fib_table_entry_path_remove (fib_index, &fibpfx,
- nat_fib_src_hi,
+ nm->fib_src_hi,
DPO_PROTO_IP6, NULL,
sw_if_index, ~0, 1,
FIB_ROUTE_PATH_INTF_RX);
- fib_table_unlock (fib_index, FIB_PROTOCOL_IP6, nat_fib_src_hi);
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP6, nm->fib_src_hi);
}
}
}
/* *INDENT-OFF* */
+/*?
+ * @cliexpar
+ * @cliexstart{nat64 plugin}
+ * Enable/disable NAT64 plugin.
+ * To enable NAT64 plugin use:
+ * vpp# nat64 plugin enable
+ * To enable NAT64 plugin and configure buckets/memory:
+ * vpp# nat64 plugin enable bib-buckets <n> bib-memory <s> \
+ * st-buckets <n> st-memory <s>
+ * To disable NAT64 plugin:
+ * vpp# nat64 plugin disable
+ * @cliexend
+?*/
+VLIB_CLI_COMMAND (nat64_plugin_enable_disable_command, static) =
+{
+ .path = "nat64 plugin",
+ .short_help = "nat64 plugin <enable "
+ "[bib-buckets <count>] [bib-memory <size>] "
+ "[st-buckets <count>] [st-memory <size>] | disable>",
+ .function = nat64_plugin_enable_disable_command_fn,
+};
/*?
* @cliexpar
/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT64 DB
- */
-#include <nat/nat64_db.h>
-#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_inlines.h>
-#include <nat/nat_syslog.h>
+
#include <vnet/fib/fib_table.h>
+//#include <nat/nat_ipfix_logging.h>
+#include <nat/nat_syslog.h>
+#include <nat/lib/inlines.h>
+#include <nat/nat64/nat64_db.h>
int
-nat64_db_init (nat64_db_t * db, u32 bib_buckets, uword bib_memory_size,
- u32 st_buckets, uword st_memory_size,
+nat64_db_init (nat64_db_t * db, nat64_config_t c,
nat64_db_free_addr_port_function_t free_addr_port_cb)
{
- clib_bihash_init_24_8 (&db->bib.in2out, "bib-in2out", bib_buckets,
- bib_memory_size);
+ clib_bihash_init_24_8 (&db->bib.in2out, "bib-in2out", c.bib_buckets,
+ c.bib_memory_size);
- clib_bihash_init_24_8 (&db->bib.out2in, "bib-out2in", bib_buckets,
- bib_memory_size);
+ clib_bihash_init_24_8 (&db->bib.out2in, "bib-out2in", c.bib_buckets,
+ c.bib_memory_size);
- clib_bihash_init_48_8 (&db->st.in2out, "st-in2out", st_buckets,
- st_memory_size);
+ clib_bihash_init_48_8 (&db->st.in2out, "st-in2out", c.st_buckets,
+ c.st_memory_size);
- clib_bihash_init_48_8 (&db->st.out2in, "st-out2in", st_buckets,
- st_memory_size);
+ clib_bihash_init_48_8 (&db->st.out2in, "st-out2in", c.st_buckets,
+ c.st_memory_size);
db->free_addr_port_cb = free_addr_port_cb;
- db->bib.limit = 10 * bib_buckets;
+ db->bib.limit = 10 * c.bib_buckets;
db->bib.bib_entries_num = 0;
- db->st.limit = 10 * st_buckets;
+ db->st.limit = 10 * c.st_buckets;
db->st.st_entries_num = 0;
db->addr_free = 0;
return 0;
}
+int
+nat64_db_free (nat64_db_t * db)
+{
+ clib_bihash_free_24_8 (&db->bib.in2out);
+ clib_bihash_free_24_8 (&db->bib.out2in);
+
+ clib_bihash_free_48_8 (&db->st.in2out);
+ clib_bihash_free_48_8 (&db->st.out2in);
+
+/* *INDENT-OFF* */
+#define _(N, i, n, s) \
+ pool_free (db->bib._##n##_bib); \
+ pool_free (db->st._##n##_st);
+ foreach_nat_protocol
+#undef _
+/* *INDENT-ON* */
+
+ pool_free (db->bib._unk_proto_bib);
+ pool_free (db->st._unk_proto_st);
+
+ return 0;
+}
+
nat64_db_bib_entry_t *
nat64_db_bib_entry_create (u32 thread_index, nat64_db_t * db,
ip6_address_t * in_addr,
nat64_db_bib_entry_t *bibe;
nat64_db_bib_entry_key_t bibe_key;
clib_bihash_kv_24_8_t kv;
- fib_table_t *fib;
if (db->bib.bib_entries_num >= db->bib.limit)
{
db->free_addr_port_cb (db, out_addr, out_port, proto);
- nat_ipfix_logging_max_bibs (thread_index, db->bib.limit);
+ //nat_ipfix_logging_max_bibs (thread_index, db->bib.limit);
return 0;
}
kv.key[2] = bibe_key.as_u64[2];
clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 1);
- fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
- nat_ipfix_logging_nat64_bib (thread_index, in_addr, out_addr, proto,
- in_port, out_port, fib->ft_table_id, 1);
+ /*fib_table_t *fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_bib (thread_index, in_addr, out_addr, proto,
+ in_port, out_port, fib->ft_table_id, 1); */
return bibe;
}
nat64_db_bib_entry_t *bib;
u32 *ste_to_be_free = 0, *ste_index, bibe_index;
nat64_db_st_entry_t *st, *ste;
- fib_table_t *fib;
switch (ip_proto_to_nat_proto (bibe->proto))
{
if (!db->addr_free)
db->free_addr_port_cb (db, &bibe->out_addr, bibe->out_port, bibe->proto);
- fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
- nat_ipfix_logging_nat64_bib (thread_index, &bibe->in_addr, &bibe->out_addr,
- bibe->proto, bibe->in_port, bibe->out_port,
- fib->ft_table_id, 0);
+ /*fib_table_t *fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_bib (thread_index, &bibe->in_addr, &bibe->out_addr,
+ bibe->proto, bibe->in_port, bibe->out_port,
+ fib->ft_table_id, 0); */
/* delete from pool */
pool_put (bib, bibe);
-
}
nat64_db_bib_entry_t *
nat64_db_bib_entry_t *bib;
nat64_db_st_entry_key_t ste_key;
clib_bihash_kv_48_8_t kv;
- fib_table_t *fib;
if (db->st.st_entries_num >= db->st.limit)
{
- nat_ipfix_logging_max_sessions (thread_index, db->st.limit);
+ //nat_ipfix_logging_max_sessions (thread_index, db->st.limit);
return 0;
}
kv.key[5] = ste_key.as_u64[5];
clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 1);
- fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
- nat_ipfix_logging_nat64_session (thread_index, &bibe->in_addr,
- &bibe->out_addr, bibe->proto,
- bibe->in_port, bibe->out_port,
- &ste->in_r_addr, &ste->out_r_addr,
- ste->r_port, ste->r_port, fib->ft_table_id,
- 1);
+ /*fib_table_t *fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_session (thread_index, &bibe->in_addr,
+ &bibe->out_addr, bibe->proto,
+ bibe->in_port, bibe->out_port,
+ &ste->in_r_addr, &ste->out_r_addr,
+ ste->r_port, ste->r_port, fib->ft_table_id,
+ 1); */
nat_syslog_nat64_sadd (bibe->fib_index, &bibe->in_addr, bibe->in_port,
&bibe->out_addr, bibe->out_port, &ste->out_r_addr,
ste->r_port, bibe->proto);
nat64_db_bib_entry_t *bib, *bibe;
nat64_db_st_entry_key_t ste_key;
clib_bihash_kv_48_8_t kv;
- fib_table_t *fib;
switch (ip_proto_to_nat_proto (ste->proto))
{
kv.key[5] = ste_key.as_u64[5];
clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 0);
- fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
- nat_ipfix_logging_nat64_session (thread_index, &bibe->in_addr,
- &bibe->out_addr, bibe->proto,
- bibe->in_port, bibe->out_port,
- &ste->in_r_addr, &ste->out_r_addr,
- ste->r_port, ste->r_port, fib->ft_table_id,
- 0);
+ /*fib_table_t *fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
+ nat_ipfix_logging_nat64_session (thread_index, &bibe->in_addr,
+ &bibe->out_addr, bibe->proto,
+ bibe->in_port, bibe->out_port,
+ &ste->in_r_addr, &ste->out_r_addr,
+ ste->r_port, ste->r_port, fib->ft_table_id,
+ 0); */
nat_syslog_nat64_sdel (bibe->fib_index, &bibe->in_addr, bibe->in_port,
&bibe->out_addr, bibe->out_port, &ste->out_r_addr,
ste->r_port, bibe->proto);
/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT64 DB
- */
#ifndef __included_nat64_db_h__
#define __included_nat64_db_h__
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/fib/fib_source.h>
+
#include <vppinfra/bihash_24_8.h>
#include <vppinfra/bihash_48_8.h>
-#include <nat/nat.h>
+typedef struct
+{
+ u32 bib_buckets;
+ u32 bib_memory_size;
+ u32 st_buckets;
+ u32 st_memory_size;
+} nat64_config_t;
typedef struct
{
* @brief Initialize NAT64 DB.
*
* @param db NAT64 DB.
- * @param bib_buckets Number of BIB hash buckets.
- * @param bib_memory_size Memory size of BIB hash.
- * @param st_buckets Number of session table hash buckets.
- * @param st_memory_size Memory size of session table hash.
+ * @param c.bib_buckets Number of BIB hash buckets.
+ * @param c.bib_memory_size Memory size of BIB hash.
+ * @param c.st_buckets Number of session table hash buckets.
+ * @param c.st_memory_size Memory size of session table hash.
* @param free_addr_port_cb Call back function to free address and port.
*
* @returns 0 on success, non-zero value otherwise.
*/
-int nat64_db_init (nat64_db_t * db, u32 bib_buckets, uword bib_memory_size,
- u32 st_buckets, uword st_memory_size,
+int nat64_db_init (nat64_db_t * db, nat64_config_t c,
nat64_db_free_addr_port_function_t free_addr_port_cb);
+/**
+ * @brief Free NAT64 DB.
+ *
+ * @param db NAT64 DB.
+ *
+ * @returns 0 on success, non-zero value otherwise.
+ */
+int nat64_db_free (nat64_db_t * db);
+
+
/**
* @brief Create new NAT64 BIB entry.
*
/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT64 IPv6 to IPv4 translation (inside to outside network)
- */
-#include <nat/nat64.h>
-#include <nat/nat_inlines.h>
+#include <nat/nat64/nat64.h>
#include <vnet/ip/ip6_to_ip4.h>
#include <vnet/fib/fib_table.h>
#include <nat/lib/nat_inlines.h>
csum = ip_csum_add_even (csum, ip4->src_address.as_u32);
csum = ip_csum_sub_even (csum, sport);
csum = ip_csum_add_even (csum, udp->src_port);
- mss_clamping (nm->sm->mss_clamping, tcp, &csum);
+ mss_clamping (nm->mss_clamping, tcp, &csum);
tcp->checksum = ip_csum_fold (csum);
nat64_tcp_session_set_state (ste, tcp, 1);
/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-/**
- * @file
- * @brief NAT64 IPv4 to IPv6 translation (otside to inside network)
- */
-#include <nat/nat64.h>
-#include <nat/nat_inlines.h>
+#include <nat/nat64/nat64.h>
#include <vnet/ip/ip4_to_ip6.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/udp/udp.h>
*/
#include <nat/nat.h>
-#include <nat/nat64.h>
#include <nat/nat_inlines.h>
#include <nat/nat44/inlines.h>
+#include <nat/lib/nat_inlines.h>
#include <nat/nat_ha.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
{
vl_api_nat_show_config_reply_t *rmp;
snat_main_t *sm = &snat_main;
- //dslite_main_t *dm = &dslite_main;
- nat64_main_t *n64m = &nat64_main;
int rv = 0;
/* *INDENT-OFF* */
rmp->static_mapping_only = sm->static_mapping_only;
rmp->static_mapping_connection_tracking =
sm->static_mapping_connection_tracking;
- rmp->deterministic = 0;
rmp->endpoint_dependent = sm->endpoint_dependent;
rmp->out2in_dpo = sm->out2in_dpo;
- //rmp->dslite_ce = dm->is_ce;
- rmp->nat64_bib_buckets = clib_net_to_host_u32(n64m->bib_buckets);
- rmp->nat64_bib_memory_size = clib_net_to_host_u64(n64m->bib_memory_size);
- rmp->nat64_st_buckets = clib_net_to_host_u32(n64m->st_buckets);
- rmp->nat64_st_memory_size = clib_net_to_host_u64(n64m->st_memory_size);
+ // these are obsolete
+ rmp->dslite_ce = 0;
+ rmp->deterministic = 0;
+ rmp->nat64_bib_buckets = 0;
+ rmp->nat64_bib_memory_size = 0;
+ rmp->nat64_st_buckets = 0;
+ rmp->nat64_st_memory_size = 0;
}));
/* *INDENT-ON* */
}
{
vl_api_nat_show_config_2_reply_t *rmp;
snat_main_t *sm = &snat_main;
- //dslite_main_t *dm = &dslite_main;
- nat64_main_t *n64m = &nat64_main;
int rv = 0;
/* *INDENT-OFF* */
rmp->static_mapping_only = sm->static_mapping_only;
rmp->static_mapping_connection_tracking =
sm->static_mapping_connection_tracking;
- rmp->deterministic = 0;
rmp->endpoint_dependent = sm->endpoint_dependent;
rmp->out2in_dpo = sm->out2in_dpo;
- //rmp->dslite_ce = dm->is_ce;
- rmp->nat64_bib_buckets = clib_net_to_host_u32(n64m->bib_buckets);
- rmp->nat64_bib_memory_size = clib_net_to_host_u64(n64m->bib_memory_size);
- rmp->nat64_st_buckets = clib_net_to_host_u32(n64m->st_buckets);
- rmp->nat64_st_memory_size = clib_net_to_host_u64(n64m->st_memory_size);
rmp->max_translations_per_thread = clib_net_to_host_u32(sm->max_translations_per_thread);
rmp->max_users_per_thread = clib_net_to_host_u32(sm->max_users_per_thread);
+ // these are obsolete
+ rmp->dslite_ce = 0;
+ rmp->deterministic = 0;
+ rmp->nat64_bib_buckets = 0;
+ rmp->nat64_bib_memory_size = 0;
+ rmp->nat64_st_buckets = 0;
+ rmp->nat64_st_memory_size = 0;
}));
/* *INDENT-ON* */
}
sm->tcp_transitory_timeout = ntohl (mp->tcp_transitory);
sm->icmp_timeout = ntohl (mp->icmp);
- rv = nat64_set_icmp_timeout (ntohl (mp->icmp));
- if (rv)
- goto send_reply;
- rv = nat64_set_udp_timeout (ntohl (mp->udp));
- if (rv)
- goto send_reply;
- rv =
- nat64_set_tcp_timeouts (ntohl (mp->tcp_transitory),
- ntohl (mp->tcp_established));
-
-send_reply:
REPLY_MACRO (VL_API_NAT_SET_TIMEOUTS_REPLY);
}
FINISH;
}
-/*************/
-/*** NAT64 ***/
-/*************/
-
-static void
- vl_api_nat64_add_del_pool_addr_range_t_handler
- (vl_api_nat64_add_del_pool_addr_range_t * mp)
-{
- vl_api_nat64_add_del_pool_addr_range_reply_t *rmp;
- snat_main_t *sm = &snat_main;
- int rv = 0;
- ip4_address_t this_addr;
- u32 start_host_order, end_host_order;
- u32 vrf_id;
- int i, count;
- u32 *tmp;
-
- tmp = (u32 *) mp->start_addr;
- start_host_order = clib_host_to_net_u32 (tmp[0]);
- tmp = (u32 *) mp->end_addr;
- end_host_order = clib_host_to_net_u32 (tmp[0]);
-
- count = (end_host_order - start_host_order) + 1;
-
- vrf_id = clib_host_to_net_u32 (mp->vrf_id);
-
- memcpy (&this_addr.as_u8, mp->start_addr, 4);
-
- for (i = 0; i < count; i++)
- {
- if ((rv = nat64_add_del_pool_addr (0, &this_addr, vrf_id, mp->is_add)))
- goto send_reply;
-
- increment_v4_address (&this_addr);
- }
-
-send_reply:
- REPLY_MACRO (VL_API_NAT64_ADD_DEL_POOL_ADDR_RANGE_REPLY);
-}
-
-static void *vl_api_nat64_add_del_pool_addr_range_t_print
- (vl_api_nat64_add_del_pool_addr_range_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat64_add_del_pool_addr_range ");
- s = format (s, "%U - %U vrf_id %u %s\n",
- format_ip4_address, mp->start_addr,
- format_ip4_address, mp->end_addr,
- ntohl (mp->vrf_id), mp->is_add ? "" : "del");
-
- FINISH;
-}
-
-typedef struct nat64_api_walk_ctx_t_
-{
- vl_api_registration_t *reg;
- u32 context;
- nat64_db_t *db;
-} nat64_api_walk_ctx_t;
-
-static int
-nat64_api_pool_walk (snat_address_t * a, void *arg)
-{
- vl_api_nat64_pool_addr_details_t *rmp;
- snat_main_t *sm = &snat_main;
- nat64_api_walk_ctx_t *ctx = arg;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_NAT64_POOL_ADDR_DETAILS + sm->msg_id_base);
- clib_memcpy (rmp->address, &(a->addr), 4);
- if (a->fib_index != ~0)
- {
- fib_table_t *fib = fib_table_get (a->fib_index, FIB_PROTOCOL_IP6);
- if (!fib)
- return -1;
- rmp->vrf_id = ntohl (fib->ft_table_id);
- }
- else
- rmp->vrf_id = ~0;
- rmp->context = ctx->context;
-
- vl_api_send_msg (ctx->reg, (u8 *) rmp);
-
- return 0;
-}
-
-static void
-vl_api_nat64_pool_addr_dump_t_handler (vl_api_nat64_pool_addr_dump_t * mp)
-{
- vl_api_registration_t *reg;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
-
- nat64_api_walk_ctx_t ctx = {
- .reg = reg,
- .context = mp->context,
- };
-
- nat64_pool_addr_walk (nat64_api_pool_walk, &ctx);
-}
-
-static void *
-vl_api_nat64_pool_addr_dump_t_print (vl_api_nat64_pool_addr_dump_t * mp,
- void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat64_pool_addr_dump\n");
-
- FINISH;
-}
-
-static void
-vl_api_nat64_add_del_interface_t_handler (vl_api_nat64_add_del_interface_t *
- mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat64_add_del_interface_reply_t *rmp;
- int rv = 0;
-
- VALIDATE_SW_IF_INDEX (mp);
-
- rv =
- nat64_add_del_interface (ntohl (mp->sw_if_index),
- mp->flags & NAT_API_IS_INSIDE, mp->is_add);
-
- BAD_SW_IF_INDEX_LABEL;
-
- REPLY_MACRO (VL_API_NAT64_ADD_DEL_INTERFACE_REPLY);
-}
-
-static void *
-vl_api_nat64_add_del_interface_t_print (vl_api_nat64_add_del_interface_t * mp,
- void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat64_add_del_interface ");
- s = format (s, "sw_if_index %d %s %s",
- clib_host_to_net_u32 (mp->sw_if_index),
- mp->flags & NAT_API_IS_INSIDE ? "in" : "out",
- mp->is_add ? "" : "del");
-
- FINISH;
-}
-
-static int
-nat64_api_interface_walk (snat_interface_t * i, void *arg)
-{
- vl_api_nat64_interface_details_t *rmp;
- snat_main_t *sm = &snat_main;
- nat64_api_walk_ctx_t *ctx = arg;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_NAT64_INTERFACE_DETAILS + sm->msg_id_base);
- rmp->sw_if_index = ntohl (i->sw_if_index);
-
- if (nat_interface_is_inside (i))
- rmp->flags |= NAT_API_IS_INSIDE;
- if (nat_interface_is_outside (i))
- rmp->flags |= NAT_API_IS_OUTSIDE;
-
- rmp->context = ctx->context;
-
- vl_api_send_msg (ctx->reg, (u8 *) rmp);
-
- return 0;
-}
-
-static void
-vl_api_nat64_interface_dump_t_handler (vl_api_nat64_interface_dump_t * mp)
-{
- vl_api_registration_t *reg;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
-
- nat64_api_walk_ctx_t ctx = {
- .reg = reg,
- .context = mp->context,
- };
-
- nat64_interfaces_walk (nat64_api_interface_walk, &ctx);
-}
-
-static void *
-vl_api_nat64_interface_dump_t_print (vl_api_nat64_interface_dump_t * mp,
- void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_interface_dump ");
-
- FINISH;
-}
-
-static void
- vl_api_nat64_add_del_static_bib_t_handler
- (vl_api_nat64_add_del_static_bib_t * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat64_add_del_static_bib_reply_t *rmp;
- ip6_address_t in_addr;
- ip4_address_t out_addr;
- int rv = 0;
-
- memcpy (&in_addr.as_u8, mp->i_addr, 16);
- memcpy (&out_addr.as_u8, mp->o_addr, 4);
-
- rv =
- nat64_add_del_static_bib_entry (&in_addr, &out_addr,
- clib_net_to_host_u16 (mp->i_port),
- clib_net_to_host_u16 (mp->o_port),
- mp->proto,
- clib_net_to_host_u32 (mp->vrf_id),
- mp->is_add);
-
- REPLY_MACRO (VL_API_NAT64_ADD_DEL_STATIC_BIB_REPLY);
-}
-
-static void *vl_api_nat64_add_del_static_bib_t_print
- (vl_api_nat64_add_del_static_bib_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat64_add_del_static_bib ");
- s = format (s, "protocol %d i_addr %U o_addr %U ",
- mp->proto,
- format_ip6_address, mp->i_addr, format_ip4_address, mp->o_addr);
-
- if (mp->vrf_id != ~0)
- s = format (s, "vrf %d", clib_net_to_host_u32 (mp->vrf_id));
-
- FINISH;
-}
-
-static int
-nat64_api_bib_walk (nat64_db_bib_entry_t * bibe, void *arg)
-{
- vl_api_nat64_bib_details_t *rmp;
- snat_main_t *sm = &snat_main;
- nat64_api_walk_ctx_t *ctx = arg;
- fib_table_t *fib;
-
- fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
- if (!fib)
- return -1;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_NAT64_BIB_DETAILS + sm->msg_id_base);
- rmp->context = ctx->context;
- clib_memcpy (rmp->i_addr, &(bibe->in_addr), 16);
- clib_memcpy (rmp->o_addr, &(bibe->out_addr), 4);
- rmp->i_port = bibe->in_port;
- rmp->o_port = bibe->out_port;
- rmp->vrf_id = ntohl (fib->ft_table_id);
- rmp->proto = bibe->proto;
- if (bibe->is_static)
- rmp->flags |= NAT_API_IS_STATIC;
- rmp->ses_num = ntohl (bibe->ses_num);
-
- vl_api_send_msg (ctx->reg, (u8 *) rmp);
-
- return 0;
-}
-
-static void
-vl_api_nat64_bib_dump_t_handler (vl_api_nat64_bib_dump_t * mp)
-{
- vl_api_registration_t *reg;
- nat64_main_t *nm = &nat64_main;
- nat64_db_t *db;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
-
- nat64_api_walk_ctx_t ctx = {
- .reg = reg,
- .context = mp->context,
- };
-
- /* *INDENT-OFF* */
- vec_foreach (db, nm->db)
- nat64_db_bib_walk (db, mp->proto, nat64_api_bib_walk, &ctx);
- /* *INDENT-ON* */
-}
-
-static void *
-vl_api_nat64_bib_dump_t_print (vl_api_nat64_bib_dump_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_bib_dump protocol %d", mp->proto);
-
- FINISH;
-}
-
-static int
-nat64_api_st_walk (nat64_db_st_entry_t * ste, void *arg)
-{
- vl_api_nat64_st_details_t *rmp;
- snat_main_t *sm = &snat_main;
- nat64_api_walk_ctx_t *ctx = arg;
- nat64_db_bib_entry_t *bibe;
- fib_table_t *fib;
-
- bibe = nat64_db_bib_entry_by_index (ctx->db, ste->proto, ste->bibe_index);
- if (!bibe)
- return -1;
-
- fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
- if (!fib)
- return -1;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_NAT64_ST_DETAILS + sm->msg_id_base);
- rmp->context = ctx->context;
- clib_memcpy (rmp->il_addr, &(bibe->in_addr), 16);
- clib_memcpy (rmp->ol_addr, &(bibe->out_addr), 4);
- rmp->il_port = bibe->in_port;
- rmp->ol_port = bibe->out_port;
- clib_memcpy (rmp->ir_addr, &(ste->in_r_addr), 16);
- clib_memcpy (rmp->or_addr, &(ste->out_r_addr), 4);
- rmp->il_port = ste->r_port;
- rmp->vrf_id = ntohl (fib->ft_table_id);
- rmp->proto = ste->proto;
-
- vl_api_send_msg (ctx->reg, (u8 *) rmp);
-
- return 0;
-}
-
-static void
-vl_api_nat64_st_dump_t_handler (vl_api_nat64_st_dump_t * mp)
-{
- vl_api_registration_t *reg;
- nat64_main_t *nm = &nat64_main;
- nat64_db_t *db;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
-
- nat64_api_walk_ctx_t ctx = {
- .reg = reg,
- .context = mp->context,
- };
-
- /* *INDENT-OFF* */
- vec_foreach (db, nm->db)
- {
- ctx.db = db;
- nat64_db_st_walk (db, mp->proto, nat64_api_st_walk, &ctx);
- }
- /* *INDENT-ON* */
-}
-
-static void *
-vl_api_nat64_st_dump_t_print (vl_api_nat64_st_dump_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: snat_st_dump protocol %d", mp->proto);
-
- FINISH;
-}
-
-static void
-vl_api_nat64_add_del_prefix_t_handler (vl_api_nat64_add_del_prefix_t * mp)
-{
- vl_api_nat64_add_del_prefix_reply_t *rmp;
- snat_main_t *sm = &snat_main;
- ip6_address_t prefix;
- int rv = 0;
-
- memcpy (&prefix.as_u8, mp->prefix.address, 16);
-
- rv =
- nat64_add_del_prefix (&prefix, mp->prefix.len,
- clib_net_to_host_u32 (mp->vrf_id), mp->is_add);
- REPLY_MACRO (VL_API_NAT64_ADD_DEL_PREFIX_REPLY);
-}
-
-static void *
-vl_api_nat64_add_del_prefix_t_print (vl_api_nat64_add_del_prefix_t * mp,
- void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat64_add_del_prefix %U/%u vrf_id %u %s\n",
- format_ip6_address, mp->prefix.address, mp->prefix.len,
- ntohl (mp->vrf_id), mp->is_add ? "" : "del");
-
- FINISH;
-}
-
-static int
-nat64_api_prefix_walk (nat64_prefix_t * p, void *arg)
-{
- vl_api_nat64_prefix_details_t *rmp;
- snat_main_t *sm = &snat_main;
- nat64_api_walk_ctx_t *ctx = arg;
-
- rmp = vl_msg_api_alloc (sizeof (*rmp));
- clib_memset (rmp, 0, sizeof (*rmp));
- rmp->_vl_msg_id = ntohs (VL_API_NAT64_PREFIX_DETAILS + sm->msg_id_base);
- clib_memcpy (rmp->prefix.address, &(p->prefix), 16);
- rmp->prefix.len = p->plen;
- rmp->vrf_id = ntohl (p->vrf_id);
- rmp->context = ctx->context;
-
- vl_api_send_msg (ctx->reg, (u8 *) rmp);
-
- return 0;
-}
-
-static void
-vl_api_nat64_prefix_dump_t_handler (vl_api_nat64_prefix_dump_t * mp)
-{
- vl_api_registration_t *reg;
-
- reg = vl_api_client_index_to_registration (mp->client_index);
- if (!reg)
- return;
-
- nat64_api_walk_ctx_t ctx = {
- .reg = reg,
- .context = mp->context,
- };
-
- nat64_prefix_walk (nat64_api_prefix_walk, &ctx);
-}
-
-static void *
-vl_api_nat64_prefix_dump_t_print (vl_api_nat64_prefix_dump_t * mp,
- void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat64_prefix_dump\n");
-
- FINISH;
-}
-
-static void
- vl_api_nat64_add_del_interface_addr_t_handler
- (vl_api_nat64_add_del_interface_addr_t * mp)
-{
- snat_main_t *sm = &snat_main;
- vl_api_nat64_add_del_interface_addr_reply_t *rmp;
- u32 sw_if_index = ntohl (mp->sw_if_index);
- int rv = 0;
-
- VALIDATE_SW_IF_INDEX (mp);
-
- rv = nat64_add_interface_address (sw_if_index, mp->is_add);
-
- BAD_SW_IF_INDEX_LABEL;
-
- REPLY_MACRO (VL_API_NAT64_ADD_DEL_INTERFACE_ADDR_REPLY);
-}
-
-static void *vl_api_nat64_add_del_interface_addr_t_print
- (vl_api_nat64_add_del_interface_addr_t * mp, void *handle)
-{
- u8 *s;
-
- s = format (0, "SCRIPT: nat64_add_del_interface_addr ");
- s = format (s, "sw_if_index %d %s",
- clib_host_to_net_u32 (mp->sw_if_index),
- mp->is_add ? "" : "del");
-
- FINISH;
-}
-
/* List of message types that this plugin understands */
#define foreach_snat_plugin_api_msg \
_(NAT_CONTROL_PING, nat_control_ping) \
_(NAT44_LB_STATIC_MAPPING_DUMP, nat44_lb_static_mapping_dump) \
_(NAT44_DEL_SESSION, nat44_del_session) \
_(NAT44_FORWARDING_ENABLE_DISABLE, nat44_forwarding_enable_disable) \
-_(NAT44_FORWARDING_IS_ENABLED, nat44_forwarding_is_enabled) \
-_(NAT64_ADD_DEL_POOL_ADDR_RANGE, nat64_add_del_pool_addr_range) \
-_(NAT64_POOL_ADDR_DUMP, nat64_pool_addr_dump) \
-_(NAT64_ADD_DEL_INTERFACE, nat64_add_del_interface) \
-_(NAT64_INTERFACE_DUMP, nat64_interface_dump) \
-_(NAT64_ADD_DEL_STATIC_BIB, nat64_add_del_static_bib) \
-_(NAT64_BIB_DUMP, nat64_bib_dump) \
-_(NAT64_ST_DUMP, nat64_st_dump) \
-_(NAT64_ADD_DEL_PREFIX, nat64_add_del_prefix) \
-_(NAT64_PREFIX_DUMP, nat64_prefix_dump) \
-_(NAT64_ADD_DEL_INTERFACE_ADDR, nat64_add_del_interface_addr)
+_(NAT44_FORWARDING_IS_ENABLED, nat44_forwarding_is_enabled)
/* Set up the API message handling tables */
static clib_error_t *
return 1;
}
-static inline void
-increment_v4_address (ip4_address_t * a)
-{
- u32 v;
-
- v = clib_net_to_host_u32 (a->as_u32) + 1;
- a->as_u32 = clib_host_to_net_u32 (v);
-}
-
static_always_inline u16
snat_random_port (u16 min, u16 max)
{
ip4_n[3] = ip6_n[15]
return socket.inet_ntop(socket.AF_INET, ''.join(ip4_n))
- def create_stream_in_ip6(self, in_if, out_if, hlim=64, pref=None, plen=0):
- """
- Create IPv6 packet stream for inside network
-
- :param in_if: Inside interface
- :param out_if: Outside interface
- :param ttl: Hop Limit of generated packets
- :param pref: NAT64 prefix
- :param plen: NAT64 prefix length
- """
- pkts = []
- if pref is None:
- dst = ''.join(['64:ff9b::', out_if.remote_ip4])
- else:
- dst = self.compose_ip6(out_if.remote_ip4, pref, plen)
-
- # TCP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- TCP(sport=self.tcp_port_in, dport=20))
- pkts.append(p)
-
- # UDP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- UDP(sport=self.udp_port_in, dport=20))
- pkts.append(p)
-
- # ICMP
- p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
- IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
- ICMPv6EchoRequest(id=self.icmp_id_in))
- pkts.append(p)
-
- return pkts
-
def create_stream_out(self, out_if, dst_ip=None, ttl=64,
use_inside_ports=False):
"""
pkts.append(p)
return pkts
- def create_stream_frag_ip6(self, src_if, dst, sport, dport, data,
- pref=None, plen=0, frag_size=128):
- """
- Create fragmented packet stream
-
- :param src_if: Source interface
- :param dst: Destination IPv4 address
- :param sport: Source TCP port
- :param dport: Destination TCP port
- :param data: Payload data
- :param pref: NAT64 prefix
- :param plen: NAT64 prefix length
- :param fragsize: size of fragments
- :returns: Fragments
- """
- if pref is None:
- dst_ip6 = ''.join(['64:ff9b::', dst])
- else:
- dst_ip6 = self.compose_ip6(dst, pref, plen)
-
- p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
- IPv6(src=src_if.remote_ip6, dst=dst_ip6) /
- IPv6ExtHdrFragment(id=random.randint(0, 65535)) /
- TCP(sport=sport, dport=dport) /
- Raw(data))
-
- return fragment6(p, frag_size)
-
def reass_frags_and_verify(self, frags, src, dst):
"""
Reassemble and verify fragmented packet
# maxBIBEntries
self.assertEqual(struct.pack("I", limit), record[472])
- def verify_ipfix_bib(self, data, is_create, src_addr):
- """
- Verify IPFIX NAT64 BIB create and delete events
-
- :param data: Decoded IPFIX data records
- :param is_create: Create event if nonzero value otherwise delete event
- :param src_addr: IPv6 source address
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- if is_create:
- self.assertEqual(scapy.compat.orb(record[230]), 10)
- else:
- self.assertEqual(scapy.compat.orb(record[230]), 11)
- # sourceIPv6Address
- self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
- # postNATSourceIPv4Address
- self.assertEqual(self.nat_addr_n, record[225])
- # protocolIdentifier
- self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
- # ingressVRFID
- self.assertEqual(struct.pack("!I", 0), record[234])
- # sourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
- # postNAPTSourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
-
- def verify_ipfix_nat64_ses(self, data, is_create, src_addr, dst_addr,
- dst_port):
- """
- Verify IPFIX NAT64 session create and delete events
-
- :param data: Decoded IPFIX data records
- :param is_create: Create event if nonzero value otherwise delete event
- :param src_addr: IPv6 source address
- :param dst_addr: IPv4 destination address
- :param dst_port: destination TCP port
- """
- self.assertEqual(1, len(data))
- record = data[0]
- # natEvent
- if is_create:
- self.assertEqual(scapy.compat.orb(record[230]), 6)
- else:
- self.assertEqual(scapy.compat.orb(record[230]), 7)
- # sourceIPv6Address
- self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
- # destinationIPv6Address
- self.assertEqual(socket.inet_pton(socket.AF_INET6,
- self.compose_ip6(dst_addr,
- '64:ff9b::',
- 96)),
- record[28])
- # postNATSourceIPv4Address
- self.assertEqual(self.nat_addr_n, record[225])
- # postNATDestinationIPv4Address
- self.assertEqual(socket.inet_pton(socket.AF_INET, dst_addr),
- record[226])
- # protocolIdentifier
- self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
- # ingressVRFID
- self.assertEqual(struct.pack("!I", 0), record[234])
- # sourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
- # postNAPTSourceTransportPort
- self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
- # destinationTransportPort
- self.assertEqual(struct.pack("!H", dst_port), record[11])
- # postNAPTDestinationTransportPort
- self.assertEqual(struct.pack("!H", dst_port), record[228])
-
def verify_no_nat44_user(self):
""" Verify that there is no NAT44 user """
users = self.vapi.nat44_user_dump()
self.verify_capture_in(capture, self.pg0)
-class TestNAT64(MethodHolder):
- """ NAT64 Test Cases """
-
- @classmethod
- def setUpConstants(cls):
- super(TestNAT64, cls).setUpConstants()
- cls.vpp_cmdline.extend(["nat", "{", "nat64 bib hash buckets 128",
- "nat64 st hash buckets 256", "}"])
-
- @classmethod
- def setUpClass(cls):
- super(TestNAT64, cls).setUpClass()
-
- cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
- cls.udp_port_in = 6304
- cls.udp_port_out = 6304
- cls.icmp_id_in = 6305
- cls.icmp_id_out = 6305
- cls.tcp_external_port = 80
- cls.nat_addr = '10.0.0.3'
- cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
- cls.vrf1_id = 10
- cls.vrf1_nat_addr = '10.0.10.3'
- cls.ipfix_src_port = 4739
- cls.ipfix_domain_id = 1
-
- cls.create_pg_interfaces(range(6))
- cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
- cls.ip6_interfaces.append(cls.pg_interfaces[2])
- cls.ip4_interfaces = list(cls.pg_interfaces[1:2])
-
- cls.vapi.ip_table_add_del(is_add=1,
- table={'table_id': cls.vrf1_id,
- 'is_ip6': 1})
-
- cls.pg_interfaces[2].set_table_ip6(cls.vrf1_id)
-
- cls.pg0.generate_remote_hosts(2)
-
- for i in cls.ip6_interfaces:
- i.admin_up()
- i.config_ip6()
- i.configure_ipv6_neighbors()
-
- for i in cls.ip4_interfaces:
- i.admin_up()
- i.config_ip4()
- i.resolve_arp()
-
- cls.pg3.admin_up()
- cls.pg3.config_ip4()
- cls.pg3.resolve_arp()
- cls.pg3.config_ip6()
- cls.pg3.configure_ipv6_neighbors()
-
- cls.pg5.admin_up()
- cls.pg5.config_ip6()
-
- @classmethod
- def tearDownClass(cls):
- super(TestNAT64, cls).tearDownClass()
-
- def test_nat64_inside_interface_handles_neighbor_advertisement(self):
- """ NAT64 inside interface handles Neighbor Advertisement """
-
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg5.sw_if_index)
-
- # Try to send ping
- ping = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
- IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
- ICMPv6EchoRequest())
- pkts = [ping]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Wait for Neighbor Solicitation
- capture = self.pg5.get_capture(len(pkts))
- packet = capture[0]
- try:
- self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
- self.assertEqual(packet.haslayer(ICMPv6ND_NS), 1)
- tgt = packet[ICMPv6ND_NS].tgt
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # Send Neighbor Advertisement
- p = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
- IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
- ICMPv6ND_NA(tgt=tgt) /
- ICMPv6NDOptDstLLAddr(lladdr=self.pg5.remote_mac))
- pkts = [p]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Try to send ping again
- pkts = [ping]
- self.pg5.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
-
- # Wait for ping reply
- capture = self.pg5.get_capture(len(pkts))
- packet = capture[0]
- try:
- self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
- self.assertEqual(packet[IPv6].dst, self.pg5.remote_ip6)
- self.assertEqual(packet.haslayer(ICMPv6EchoReply), 1)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_pool(self):
- """ Add/delete address to NAT64 pool """
- nat_addr = '1.2.3.4'
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
- end_addr=nat_addr,
- vrf_id=0xFFFFFFFF, is_add=1)
-
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 1)
- self.assertEqual(str(addresses[0].address), nat_addr)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
- end_addr=nat_addr,
- vrf_id=0xFFFFFFFF, is_add=0)
-
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 0)
-
- def test_interface(self):
- """ Enable/disable NAT64 feature on the interface """
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- interfaces = self.vapi.nat64_interface_dump()
- self.assertEqual(len(interfaces), 2)
- pg0_found = False
- pg1_found = False
- for intf in interfaces:
- if intf.sw_if_index == self.pg0.sw_if_index:
- self.assertEqual(intf.flags, self.config_flags.NAT_IS_INSIDE)
- pg0_found = True
- elif intf.sw_if_index == self.pg1.sw_if_index:
- self.assertEqual(intf.flags, self.config_flags.NAT_IS_OUTSIDE)
- pg1_found = True
- self.assertTrue(pg0_found)
- self.assertTrue(pg1_found)
-
- features = self.vapi.cli("show interface features pg0")
- self.assertIn('nat64-in2out', features)
- features = self.vapi.cli("show interface features pg1")
- self.assertIn('nat64-out2in', features)
-
- self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
- sw_if_index=self.pg1.sw_if_index)
-
- interfaces = self.vapi.nat64_interface_dump()
- self.assertEqual(len(interfaces), 0)
-
- def test_static_bib(self):
- """ Add/delete static BIB entry """
- in_addr = '2001:db8:85a3::8a2e:370:7334'
- out_addr = '10.1.1.3'
- in_port = 1234
- out_port = 5678
- proto = IP_PROTOS.tcp
-
- self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
- i_port=in_port, o_port=out_port,
- proto=proto, vrf_id=0, is_add=1)
- bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
- static_bib_num = 0
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- static_bib_num += 1
- self.assertEqual(str(bibe.i_addr), in_addr)
- self.assertEqual(str(bibe.o_addr), out_addr)
- self.assertEqual(bibe.i_port, in_port)
- self.assertEqual(bibe.o_port, out_port)
- self.assertEqual(static_bib_num, 1)
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
- i_port=in_port, o_port=out_port,
- proto=proto, vrf_id=0, is_add=0)
- bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
- static_bib_num = 0
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- static_bib_num += 1
- self.assertEqual(static_bib_num, 0)
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 0)
-
- def test_set_timeouts(self):
- """ Set NAT64 timeouts """
- # verify default values
- timeouts = self.vapi.nat_get_timeouts()
- self.assertEqual(timeouts.udp, 300)
- self.assertEqual(timeouts.icmp, 60)
- self.assertEqual(timeouts.tcp_transitory, 240)
- self.assertEqual(timeouts.tcp_established, 7440)
-
- # set and verify custom values
- self.vapi.nat_set_timeouts(udp=200, tcp_established=7450,
- tcp_transitory=250, icmp=30)
- timeouts = self.vapi.nat_get_timeouts()
- self.assertEqual(timeouts.udp, 200)
- self.assertEqual(timeouts.icmp, 30)
- self.assertEqual(timeouts.tcp_transitory, 250)
- self.assertEqual(timeouts.tcp_established, 7450)
-
- def test_dynamic(self):
- """ NAT64 dynamic translation test """
- self.tcp_port_in = 6303
- self.udp_port_in = 6304
- self.icmp_id_in = 6305
-
- ses_num_start = self.nat64_get_ses_num()
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- tcpn = self.statistics.get_counter('/nat64/in2out/tcp')[0]
- udpn = self.statistics.get_counter('/nat64/in2out/udp')[0]
- icmpn = self.statistics.get_counter('/nat64/in2out/icmp')[0]
- drops = self.statistics.get_counter('/nat64/in2out/drops')[0]
-
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- if_idx = self.pg0.sw_if_index
- cnt = self.statistics.get_counter('/nat64/in2out/tcp')[0]
- self.assertEqual(cnt[if_idx] - tcpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/in2out/udp')[0]
- self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/in2out/icmp')[0]
- self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/in2out/drops')[0]
- self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
-
- # out2in
- tcpn = self.statistics.get_counter('/nat64/out2in/tcp')[0]
- udpn = self.statistics.get_counter('/nat64/out2in/udp')[0]
- icmpn = self.statistics.get_counter('/nat64/out2in/icmp')[0]
- drops = self.statistics.get_counter('/nat64/out2in/drops')[0]
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- if_idx = self.pg1.sw_if_index
- cnt = self.statistics.get_counter('/nat64/out2in/tcp')[0]
- self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
- cnt = self.statistics.get_counter('/nat64/out2in/udp')[0]
- self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/out2in/icmp')[0]
- self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
- cnt = self.statistics.get_counter('/nat64/out2in/drops')[0]
- self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
-
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 3)
- sessions = self.statistics.get_counter('/nat64/total-sessions')
- self.assertEqual(sessions[0][0], 3)
-
- # in2out
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- ses_num_end = self.nat64_get_ses_num()
-
- self.assertEqual(ses_num_end - ses_num_start, 3)
-
- # tenant with specific VRF
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
- end_addr=self.vrf1_nat_addr,
- vrf_id=self.vrf1_id, is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg2.sw_if_index)
-
- pkts = self.create_stream_in_ip6(self.pg2, self.pg1)
- self.pg2.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg2.remote_ip6)
-
- def test_static(self):
- """ NAT64 static translation test """
- self.tcp_port_in = 60303
- self.udp_port_in = 60304
- self.icmp_id_in = 60305
- self.tcp_port_out = 60303
- self.udp_port_out = 60304
- self.icmp_id_out = 60305
-
- ses_num_start = self.nat64_get_ses_num()
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.tcp_port_in,
- o_port=self.tcp_port_out,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.udp_port_in,
- o_port=self.udp_port_out,
- proto=IP_PROTOS.udp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
- o_addr=self.nat_addr,
- i_port=self.icmp_id_in,
- o_port=self.icmp_id_out,
- proto=IP_PROTOS.icmp, vrf_id=0,
- is_add=1)
-
- # in2out
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4, same_port=True)
-
- # out2in
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
-
- ses_num_end = self.nat64_get_ses_num()
-
- self.assertEqual(ses_num_end - ses_num_start, 3)
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_session_timeout(self):
- """ NAT64 session timeout """
- self.icmp_id_in = 1234
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat_set_timeouts(udp=300, tcp_established=5,
- tcp_transitory=5,
- icmp=5)
-
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
-
- ses_num_before_timeout = self.nat64_get_ses_num()
-
- sleep(15)
-
- # ICMP and TCP session after timeout
- ses_num_after_timeout = self.nat64_get_ses_num()
- self.assertEqual(ses_num_before_timeout - ses_num_after_timeout, 2)
-
- def test_icmp_error(self):
- """ NAT64 ICMP Error message translation """
- self.tcp_port_in = 6303
- self.udp_port_in = 6304
- self.icmp_id_in = 6305
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # send some packets to create sessions
- pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture_ip4 = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture_ip4,
- nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture_ip6 = self.pg0.get_capture(len(pkts))
- ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
- self.verify_capture_in_ip6(capture_ip6, ip[IPv6].src,
- self.pg0.remote_ip6)
-
- # in2out
- pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=ip[IPv6].src) /
- ICMPv6DestUnreach(code=1) /
- packet[IPv6] for packet in capture_ip6]
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IP].src, self.nat_addr)
- self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
- self.assertEqual(packet[ICMP].type, 3)
- self.assertEqual(packet[ICMP].code, 13)
- inner = packet[IPerror]
- self.assertEqual(inner.src, self.pg1.remote_ip4)
- self.assertEqual(inner.dst, self.nat_addr)
- self.assert_packet_checksums_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].dport, self.tcp_port_out)
- elif inner.haslayer(UDPerror):
- self.assertEqual(inner[UDPerror].dport, self.udp_port_out)
- else:
- self.assertEqual(inner[ICMPerror].id, self.icmp_id_out)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # out2in
- pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- ICMP(type=3, code=13) /
- packet[IP] for packet in capture_ip4]
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, ip.src)
- self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
- icmp = packet[ICMPv6DestUnreach]
- self.assertEqual(icmp.code, 1)
- inner = icmp[IPerror6]
- self.assertEqual(inner.src, self.pg0.remote_ip6)
- self.assertEqual(inner.dst, ip.src)
- self.assert_icmpv6_checksum_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].sport, self.tcp_port_in)
- elif inner.haslayer(UDPerror):
- self.assertEqual(inner[UDPerror].sport, self.udp_port_in)
- else:
- self.assertEqual(inner[ICMPv6EchoRequest].id,
- self.icmp_id_in)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_hairpinning(self):
- """ NAT64 hairpinning """
-
- client = self.pg0.remote_hosts[0]
- server = self.pg0.remote_hosts[1]
- server_tcp_in_port = 22
- server_tcp_out_port = 4022
- server_udp_in_port = 23
- server_udp_out_port = 4023
- client_tcp_in_port = 1234
- client_udp_in_port = 1235
- client_tcp_out_port = 0
- client_udp_out_port = 0
- ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
- nat_addr_ip6 = ip.src
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_tcp_in_port,
- o_port=server_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_udp_in_port,
- o_port=server_udp_out_port,
- proto=IP_PROTOS.udp, vrf_id=0,
- is_add=1)
-
- # client to server
- pkts = []
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
- pkts.append(p)
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- UDP(sport=client_udp_in_port, dport=server_udp_out_port))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- self.assert_packet_checksums_valid(packet)
- if packet.haslayer(TCP):
- self.assertNotEqual(packet[TCP].sport, client_tcp_in_port)
- self.assertEqual(packet[TCP].dport, server_tcp_in_port)
- client_tcp_out_port = packet[TCP].sport
- else:
- self.assertNotEqual(packet[UDP].sport, client_udp_in_port)
- self.assertEqual(packet[UDP].dport, server_udp_in_port)
- client_udp_out_port = packet[UDP].sport
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # server to client
- pkts = []
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=nat_addr_ip6) /
- TCP(sport=server_tcp_in_port, dport=client_tcp_out_port))
- pkts.append(p)
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=nat_addr_ip6) /
- UDP(sport=server_udp_in_port, dport=client_udp_out_port))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, client.ip6)
- self.assert_packet_checksums_valid(packet)
- if packet.haslayer(TCP):
- self.assertEqual(packet[TCP].sport, server_tcp_out_port)
- self.assertEqual(packet[TCP].dport, client_tcp_in_port)
- else:
- self.assertEqual(packet[UDP].sport, server_udp_out_port)
- self.assertEqual(packet[UDP].dport, client_udp_in_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # ICMP error
- pkts = []
- pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=nat_addr_ip6) /
- ICMPv6DestUnreach(code=1) /
- packet[IPv6] for packet in capture]
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- for packet in capture:
- try:
- self.assertEqual(packet[IPv6].src, nat_addr_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- icmp = packet[ICMPv6DestUnreach]
- self.assertEqual(icmp.code, 1)
- inner = icmp[IPerror6]
- self.assertEqual(inner.src, server.ip6)
- self.assertEqual(inner.dst, nat_addr_ip6)
- self.assert_packet_checksums_valid(packet)
- if inner.haslayer(TCPerror):
- self.assertEqual(inner[TCPerror].sport, server_tcp_in_port)
- self.assertEqual(inner[TCPerror].dport,
- client_tcp_out_port)
- else:
- self.assertEqual(inner[UDPerror].sport, server_udp_in_port)
- self.assertEqual(inner[UDPerror].dport,
- client_udp_out_port)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_prefix(self):
- """ NAT64 Network-Specific Prefix """
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
- end_addr=self.vrf1_nat_addr,
- vrf_id=self.vrf1_id, is_add=1)
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg2.sw_if_index)
-
- # Add global prefix
- global_pref64 = "2001:db8::"
- global_pref64_len = 32
- global_pref64_str = "{}/{}".format(global_pref64, global_pref64_len)
- self.vapi.nat64_add_del_prefix(prefix=global_pref64_str, vrf_id=0,
- is_add=1)
-
- prefix = self.vapi.nat64_prefix_dump()
- self.assertEqual(len(prefix), 1)
- self.assertEqual(str(prefix[0].prefix), global_pref64_str)
- self.assertEqual(prefix[0].vrf_id, 0)
-
- # Add tenant specific prefix
- vrf1_pref64 = "2001:db8:122:300::"
- vrf1_pref64_len = 56
- vrf1_pref64_str = "{}/{}".format(vrf1_pref64, vrf1_pref64_len)
- self.vapi.nat64_add_del_prefix(prefix=vrf1_pref64_str,
- vrf_id=self.vrf1_id, is_add=1)
-
- prefix = self.vapi.nat64_prefix_dump()
- self.assertEqual(len(prefix), 2)
-
- # Global prefix
- pkts = self.create_stream_in_ip6(self.pg0,
- self.pg1,
- pref=global_pref64,
- plen=global_pref64_len)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg0.get_capture(len(pkts))
- dst_ip = self.compose_ip6(self.pg1.remote_ip4,
- global_pref64,
- global_pref64_len)
- self.verify_capture_in_ip6(capture, dst_ip, self.pg0.remote_ip6)
-
- # Tenant specific prefix
- pkts = self.create_stream_in_ip6(self.pg2,
- self.pg1,
- pref=vrf1_pref64,
- plen=vrf1_pref64_len)
- self.pg2.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg1.get_capture(len(pkts))
- self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
- dst_ip=self.pg1.remote_ip4)
-
- pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg2.get_capture(len(pkts))
- dst_ip = self.compose_ip6(self.pg1.remote_ip4,
- vrf1_pref64,
- vrf1_pref64_len)
- self.verify_capture_in_ip6(capture, dst_ip, self.pg2.remote_ip6)
-
- def test_unknown_proto(self):
- """ NAT64 translate packet with unknown protocol """
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- remote_ip6 = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
-
- # in2out
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_ip6) /
- TCP(sport=self.tcp_port_in, dport=20))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_ip6, nh=47) /
- GRE() /
- IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IP].src, self.nat_addr)
- self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
- self.assertEqual(packet.haslayer(GRE), 1)
- self.assert_packet_checksums_valid(packet)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # out2in
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
- GRE() /
- IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg1.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IPv6].src, remote_ip6)
- self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
- self.assertEqual(packet[IPv6].nh, 47)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_hairpinning_unknown_proto(self):
- """ NAT64 translate packet with unknown protocol - hairpinning """
-
- client = self.pg0.remote_hosts[0]
- server = self.pg0.remote_hosts[1]
- server_tcp_in_port = 22
- server_tcp_out_port = 4022
- client_tcp_in_port = 1234
- client_tcp_out_port = 1235
- server_nat_ip = "10.0.0.100"
- client_nat_ip = "10.0.0.110"
- server_nat_ip6 = self.compose_ip6(server_nat_ip, '64:ff9b::', 96)
- client_nat_ip6 = self.compose_ip6(client_nat_ip, '64:ff9b::', 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=server_nat_ip,
- end_addr=client_nat_ip,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=server_nat_ip,
- i_port=server_tcp_in_port,
- o_port=server_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=server_nat_ip, i_port=0,
- o_port=0,
- proto=IP_PROTOS.gre, vrf_id=0,
- is_add=1)
-
- self.vapi.nat64_add_del_static_bib(i_addr=client.ip6n,
- o_addr=client_nat_ip,
- i_port=client_tcp_in_port,
- o_port=client_tcp_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- # client to server
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=server_nat_ip6) /
- TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=client.ip6, dst=server_nat_ip6, nh=IP_PROTOS.gre) /
- GRE() /
- IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IPv6].src, client_nat_ip6)
- self.assertEqual(packet[IPv6].dst, server.ip6)
- self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- # server to client
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IPv6(src=server.ip6, dst=client_nat_ip6, nh=IP_PROTOS.gre) /
- GRE() /
- IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
- TCP(sport=1234, dport=1234))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg0.get_capture(1)
- packet = p[0]
- try:
- self.assertEqual(packet[IPv6].src, server_nat_ip6)
- self.assertEqual(packet[IPv6].dst, client.ip6)
- self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", packet))
- raise
-
- def test_one_armed_nat64(self):
- """ One armed NAT64 """
- external_port = 0
- remote_host_ip6 = self.compose_ip6(self.pg3.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg3.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg3.sw_if_index)
-
- # in2out
- p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
- IPv6(src=self.pg3.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- self.pg3.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg3.get_capture(1)
- p = capture[0]
- try:
- ip = p[IP]
- tcp = p[TCP]
- self.assertEqual(ip.src, self.nat_addr)
- self.assertEqual(ip.dst, self.pg3.remote_ip4)
- self.assertNotEqual(tcp.sport, 12345)
- external_port = tcp.sport
- self.assertEqual(tcp.dport, 80)
- self.assert_packet_checksums_valid(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- # out2in
- p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
- IP(src=self.pg3.remote_ip4, dst=self.nat_addr) /
- TCP(sport=80, dport=external_port))
- self.pg3.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- capture = self.pg3.get_capture(1)
- p = capture[0]
- try:
- ip = p[IPv6]
- tcp = p[TCP]
- self.assertEqual(ip.src, remote_host_ip6)
- self.assertEqual(ip.dst, self.pg3.remote_ip6)
- self.assertEqual(tcp.sport, 80)
- self.assertEqual(tcp.dport, 12345)
- self.assert_packet_checksums_valid(p)
- except:
- self.logger.error(ppp("Unexpected or invalid packet:", p))
- raise
-
- def test_frag_in_order(self):
- """ NAT64 translate fragments arriving in order """
- self.tcp_port_in = random.randint(1025, 65535)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- data = b'a' * 200
- pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
- self.tcp_port_in, 20, data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
-
- # out2in
- data = b"A" * 4 + b"b" * 16 + b"C" * 3
- pkts = self.create_stream_frag(self.pg1,
- self.nat_addr,
- 20,
- self.tcp_port_out,
- data)
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- self.logger.debug(ppc("Captured:", frags))
- src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
- p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
-
- def test_reass_hairpinning(self):
- """ NAT64 fragments hairpinning """
- data = b'a' * 200
- server = self.pg0.remote_hosts[1]
- server_in_port = random.randint(1025, 65535)
- server_out_port = random.randint(1025, 65535)
- client_in_port = random.randint(1025, 65535)
- ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
- nat_addr_ip6 = ip.src
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # add static BIB entry for server
- self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
- o_addr=self.nat_addr,
- i_port=server_in_port,
- o_port=server_out_port,
- proto=IP_PROTOS.tcp, vrf_id=0,
- is_add=1)
-
- # send packet from host to server
- pkts = self.create_stream_frag_ip6(self.pg0,
- self.nat_addr,
- client_in_port,
- server_out_port,
- data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- self.logger.debug(ppc("Captured:", frags))
- p = self.reass_frags_and_verify_ip6(frags, nat_addr_ip6, server.ip6)
- self.assertNotEqual(p[TCP].sport, client_in_port)
- self.assertEqual(p[TCP].dport, server_in_port)
- self.assertEqual(data, p[Raw].load)
-
- def test_frag_out_of_order(self):
- """ NAT64 translate fragments arriving out of order """
- self.tcp_port_in = random.randint(1025, 65535)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- # in2out
- data = b'a' * 200
- pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
- self.tcp_port_in, 20, data)
- pkts.reverse()
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
-
- # out2in
- data = b"A" * 4 + b"B" * 16 + b"C" * 3
- pkts = self.create_stream_frag(self.pg1,
- self.nat_addr,
- 20,
- self.tcp_port_out,
- data)
- pkts.reverse()
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
- p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
-
- def test_interface_addr(self):
- """ Acquire NAT64 pool addresses from interface """
- self.vapi.nat64_add_del_interface_addr(
- is_add=1,
- sw_if_index=self.pg4.sw_if_index)
-
- # no address in NAT64 pool
- addresses = self.vapi.nat44_address_dump()
- self.assertEqual(0, len(addresses))
-
- # configure interface address and check NAT64 address pool
- self.pg4.config_ip4()
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(len(addresses), 1)
-
- self.assertEqual(str(addresses[0].address),
- self.pg4.local_ip4)
-
- # remove interface address and check NAT64 address pool
- self.pg4.unconfig_ip4()
- addresses = self.vapi.nat64_pool_addr_dump()
- self.assertEqual(0, len(addresses))
-
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
- def test_ipfix_max_bibs_sessions(self):
- """ IPFIX logging maximum session and BIB entries exceeded """
- max_bibs = 1280
- max_sessions = 2560
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
-
- pkts = []
- src = ""
- for i in range(0, max_bibs):
- src = "fd01:aa::%x" % (i)
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- pkts.append(p)
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=22))
- pkts.append(p)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.get_capture(max_sessions)
-
- self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
- src_address=self.pg3.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=1)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=src, dst=remote_host_ip6) /
- TCP(sport=12345, dport=25))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(7)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_sessions(data, max_sessions)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=12345, dport=80))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.pg1.assert_nothing_captured()
- sleep(1)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(1)
- # verify events in data set
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- self.verify_ipfix_max_bibs(data, max_bibs)
-
- def test_ipfix_bib_ses(self):
- """ IPFIX logging NAT64 BIB/session create and delete events """
- self.tcp_port_in = random.randint(1025, 65535)
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
- src_address=self.pg3.local_ip4,
- path_mtu=512,
- template_interval=10)
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=1)
-
- # Create
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=self.tcp_port_in, dport=25))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- self.tcp_port_out = p[0][TCP].sport
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(8)
- ipfix = IPFIXDecoder()
- # first load template
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Template):
- ipfix.add_template(p.getlayer(Template))
- # verify events in data set
- for p in capture:
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- if scapy.compat.orb(data[0][230]) == 10:
- self.verify_ipfix_bib(data, 1, self.pg0.remote_ip6)
- elif scapy.compat.orb(data[0][230]) == 6:
- self.verify_ipfix_nat64_ses(data,
- 1,
- self.pg0.remote_ip6,
- self.pg1.remote_ip4,
- 25)
- else:
- self.logger.error(ppp("Unexpected or invalid packet: ", p))
-
- # Delete
- self.pg_enable_capture(self.pg_interfaces)
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=0)
- self.vapi.ipfix_flush()
- capture = self.pg3.get_capture(2)
- # verify events in data set
- for p in capture:
- self.assertTrue(p.haslayer(IPFIX))
- self.assertEqual(p[IP].src, self.pg3.local_ip4)
- self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
- self.assertEqual(p[UDP].sport, self.ipfix_src_port)
- self.assertEqual(p[UDP].dport, 4739)
- self.assertEqual(p[IPFIX].observationDomainID,
- self.ipfix_domain_id)
- if p.haslayer(Data):
- data = ipfix.decode_data_set(p.getlayer(Set))
- if scapy.compat.orb(data[0][230]) == 11:
- self.verify_ipfix_bib(data, 0, self.pg0.remote_ip6)
- elif scapy.compat.orb(data[0][230]) == 7:
- self.verify_ipfix_nat64_ses(data,
- 0,
- self.pg0.remote_ip6,
- self.pg1.remote_ip4,
- 25)
- else:
- self.logger.error(ppp("Unexpected or invalid packet: ", p))
-
- def test_syslog_sess(self):
- """ Test syslog session creation and deletion """
- self.tcp_port_in = random.randint(1025, 65535)
- remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
- '64:ff9b::',
- 96)
-
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=1)
- flags = self.config_flags.NAT_IS_INSIDE
- self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
- sw_if_index=self.pg0.sw_if_index)
- self.vapi.nat64_add_del_interface(is_add=1, flags=0,
- sw_if_index=self.pg1.sw_if_index)
- self.vapi.syslog_set_filter(
- self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_INFO)
- self.vapi.syslog_set_sender(self.pg3.local_ip4, self.pg3.remote_ip4)
-
- p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
- self.pg0.add_stream(p)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- p = self.pg1.get_capture(1)
- self.tcp_port_out = p[0][TCP].sport
- capture = self.pg3.get_capture(1)
- self.verify_syslog_sess(capture[0][Raw].load, is_ip6=True)
-
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
- end_addr=self.nat_addr,
- vrf_id=0xFFFFFFFF,
- is_add=0)
- capture = self.pg3.get_capture(1)
- self.verify_syslog_sess(capture[0][Raw].load, False, True)
-
- def nat64_get_ses_num(self):
- """
- Return number of active NAT64 sessions.
- """
- st = self.vapi.nat64_st_dump(proto=255)
- return len(st)
-
- def clear_nat64(self):
- """
- Clear NAT64 configuration.
- """
- self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
- src_port=self.ipfix_src_port,
- enable=0)
- self.ipfix_src_port = 4739
- self.ipfix_domain_id = 1
-
- self.vapi.syslog_set_filter(
- self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_EMERG)
-
- self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
- tcp_transitory=240, icmp=60)
-
- interfaces = self.vapi.nat64_interface_dump()
- for intf in interfaces:
- self.vapi.nat64_add_del_interface(is_add=0, flags=intf.flags,
- sw_if_index=intf.sw_if_index)
-
- bib = self.vapi.nat64_bib_dump(proto=255)
- for bibe in bib:
- if bibe.flags & self.config_flags.NAT_IS_STATIC:
- self.vapi.nat64_add_del_static_bib(i_addr=bibe.i_addr,
- o_addr=bibe.o_addr,
- i_port=bibe.i_port,
- o_port=bibe.o_port,
- proto=bibe.proto,
- vrf_id=bibe.vrf_id,
- is_add=0)
-
- adresses = self.vapi.nat64_pool_addr_dump()
- for addr in adresses:
- self.vapi.nat64_add_del_pool_addr_range(start_addr=addr.address,
- end_addr=addr.address,
- vrf_id=addr.vrf_id,
- is_add=0)
-
- prefixes = self.vapi.nat64_prefix_dump()
- for prefix in prefixes:
- self.vapi.nat64_add_del_prefix(prefix=str(prefix.prefix),
- vrf_id=prefix.vrf_id, is_add=0)
-
- bibs = self.statistics.get_counter('/nat64/total-bibs')
- self.assertEqual(bibs[0][0], 0)
- sessions = self.statistics.get_counter('/nat64/total-sessions')
- self.assertEqual(sessions[0][0], 0)
-
- def tearDown(self):
- super(TestNAT64, self).tearDown()
- if not self.vpp_dead:
- self.clear_nat64()
-
- def show_commands_at_teardown(self):
- self.logger.info(self.vapi.cli("show nat64 pool"))
- self.logger.info(self.vapi.cli("show nat64 interfaces"))
- self.logger.info(self.vapi.cli("show nat64 prefix"))
- self.logger.info(self.vapi.cli("show nat64 bib all"))
- self.logger.info(self.vapi.cli("show nat64 session table all"))
-
-
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
--- /dev/null
+#!/usr/bin/env python3
+
+import ipaddress
+import random
+import socket
+import struct
+import unittest
+from io import BytesIO
+from time import sleep
+
+import scapy.compat
+from framework import VppTestCase, VppTestRunner, running_extended_tests
+from ipfix import IPFIX, Set, Template, Data, IPFIXDecoder
+from scapy.data import IP_PROTOS
+from scapy.layers.inet import IP, TCP, UDP, ICMP
+from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
+from scapy.layers.inet6 import ICMPv6DestUnreach, IPerror6, IPv6ExtHdrFragment
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6EchoReply, \
+ ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, fragment6
+from scapy.layers.l2 import Ether, GRE
+from scapy.packet import Raw
+from syslog_rfc5424_parser import SyslogMessage, ParseError
+from syslog_rfc5424_parser.constants import SyslogSeverity
+from util import ppc, ppp
+from vpp_papi import VppEnum
+
+
+class TestNAT64(VppTestCase):
+ """ NAT64 Test Cases """
+
+ @property
+ def SYSLOG_SEVERITY(self):
+ return VppEnum.vl_api_syslog_severity_t
+
+ @property
+ def config_flags(self):
+ return VppEnum.vl_api_nat_config_flags_t
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestNAT64, cls).setUpClass()
+
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.tcp_external_port = 80
+ cls.nat_addr = '10.0.0.3'
+ cls.nat_addr_n = socket.inet_pton(socket.AF_INET, cls.nat_addr)
+ cls.vrf1_id = 10
+ cls.vrf1_nat_addr = '10.0.10.3'
+ cls.ipfix_src_port = 4739
+ cls.ipfix_domain_id = 1
+
+ cls.create_pg_interfaces(range(6))
+ cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
+ cls.ip6_interfaces.append(cls.pg_interfaces[2])
+ cls.ip4_interfaces = list(cls.pg_interfaces[1:2])
+
+ cls.vapi.ip_table_add_del(is_add=1,
+ table={'table_id': cls.vrf1_id,
+ 'is_ip6': 1})
+
+ cls.pg_interfaces[2].set_table_ip6(cls.vrf1_id)
+
+ cls.pg0.generate_remote_hosts(2)
+
+ for i in cls.ip6_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.configure_ipv6_neighbors()
+
+ for i in cls.ip4_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ cls.pg3.admin_up()
+ cls.pg3.config_ip4()
+ cls.pg3.resolve_arp()
+ cls.pg3.config_ip6()
+ cls.pg3.configure_ipv6_neighbors()
+
+ cls.pg5.admin_up()
+ cls.pg5.config_ip6()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestNAT64, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestNAT64, self).setUp()
+ self.vapi.nat64_plugin_enable_disable(enable=1,
+ bib_buckets=128, st_buckets=256)
+
+ def tearDown(self):
+ super(TestNAT64, self).tearDown()
+ if not self.vpp_dead:
+ self.vapi.nat64_plugin_enable_disable(enable=0)
+
+ def show_commands_at_teardown(self):
+ self.logger.info(self.vapi.cli("show nat64 pool"))
+ self.logger.info(self.vapi.cli("show nat64 interfaces"))
+ self.logger.info(self.vapi.cli("show nat64 prefix"))
+ self.logger.info(self.vapi.cli("show nat64 bib all"))
+ self.logger.info(self.vapi.cli("show nat64 session table all"))
+
+ def create_stream_in_ip6(self, in_if, out_if, hlim=64, pref=None, plen=0):
+ """
+ Create IPv6 packet stream for inside network
+
+ :param in_if: Inside interface
+ :param out_if: Outside interface
+ :param ttl: Hop Limit of generated packets
+ :param pref: NAT64 prefix
+ :param plen: NAT64 prefix length
+ """
+ pkts = []
+ if pref is None:
+ dst = ''.join(['64:ff9b::', out_if.remote_ip4])
+ else:
+ dst = self.compose_ip6(out_if.remote_ip4, pref, plen)
+
+ # TCP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+ TCP(sport=self.tcp_port_in, dport=20))
+ pkts.append(p)
+
+ # UDP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+ UDP(sport=self.udp_port_in, dport=20))
+ pkts.append(p)
+
+ # ICMP
+ p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
+ IPv6(src=in_if.remote_ip6, dst=dst, hlim=hlim) /
+ ICMPv6EchoRequest(id=self.icmp_id_in))
+ pkts.append(p)
+
+ return pkts
+
+ def create_stream_out(self, out_if, dst_ip=None, ttl=64,
+ use_inside_ports=False):
+ """
+ Create packet stream for outside network
+
+ :param out_if: Outside interface
+ :param dst_ip: Destination IP address (Default use global NAT address)
+ :param ttl: TTL of generated packets
+ :param use_inside_ports: Use inside NAT ports as destination ports
+ instead of outside ports
+ """
+ if dst_ip is None:
+ dst_ip = self.nat_addr
+ if not use_inside_ports:
+ tcp_port = self.tcp_port_out
+ udp_port = self.udp_port_out
+ icmp_id = self.icmp_id_out
+ else:
+ tcp_port = self.tcp_port_in
+ udp_port = self.udp_port_in
+ icmp_id = self.icmp_id_in
+ pkts = []
+ # TCP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+ TCP(dport=tcp_port, sport=20))
+ pkts.extend([p, p])
+
+ # UDP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+ UDP(dport=udp_port, sport=20))
+ pkts.append(p)
+
+ # ICMP
+ p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
+ IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
+ ICMP(id=icmp_id, type='echo-reply'))
+ pkts.append(p)
+
+ return pkts
+
+ def verify_capture_out(self, capture, nat_ip=None, same_port=False,
+ dst_ip=None, is_ip6=False, ignore_port=False):
+ """
+ Verify captured packets on outside network
+
+ :param capture: Captured packets
+ :param nat_ip: Translated IP address (Default use global NAT address)
+ :param same_port: Source port number is not translated (Default False)
+ :param dst_ip: Destination IP address (Default do not verify)
+ :param is_ip6: If L3 protocol is IPv6 (Default False)
+ """
+ if is_ip6:
+ IP46 = IPv6
+ ICMP46 = ICMPv6EchoRequest
+ else:
+ IP46 = IP
+ ICMP46 = ICMP
+ if nat_ip is None:
+ nat_ip = self.nat_addr
+ for packet in capture:
+ try:
+ if not is_ip6:
+ self.assert_packet_checksums_valid(packet)
+ self.assertEqual(packet[IP46].src, nat_ip)
+ if dst_ip is not None:
+ self.assertEqual(packet[IP46].dst, dst_ip)
+ if packet.haslayer(TCP):
+ if not ignore_port:
+ if same_port:
+ self.assertEqual(
+ packet[TCP].sport, self.tcp_port_in)
+ else:
+ self.assertNotEqual(
+ packet[TCP].sport, self.tcp_port_in)
+ self.tcp_port_out = packet[TCP].sport
+ self.assert_packet_checksums_valid(packet)
+ elif packet.haslayer(UDP):
+ if not ignore_port:
+ if same_port:
+ self.assertEqual(
+ packet[UDP].sport, self.udp_port_in)
+ else:
+ self.assertNotEqual(
+ packet[UDP].sport, self.udp_port_in)
+ self.udp_port_out = packet[UDP].sport
+ else:
+ if not ignore_port:
+ if same_port:
+ self.assertEqual(
+ packet[ICMP46].id, self.icmp_id_in)
+ else:
+ self.assertNotEqual(
+ packet[ICMP46].id, self.icmp_id_in)
+ self.icmp_id_out = packet[ICMP46].id
+ self.assert_packet_checksums_valid(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet "
+ "(outside network):", packet))
+ raise
+
+ def verify_capture_in_ip6(self, capture, src_ip, dst_ip):
+ """
+ Verify captured IPv6 packets on inside network
+
+ :param capture: Captured packets
+ :param src_ip: Source IP
+ :param dst_ip: Destination IP address
+ """
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, src_ip)
+ self.assertEqual(packet[IPv6].dst, dst_ip)
+ self.assert_packet_checksums_valid(packet)
+ if packet.haslayer(TCP):
+ self.assertEqual(packet[TCP].dport, self.tcp_port_in)
+ elif packet.haslayer(UDP):
+ self.assertEqual(packet[UDP].dport, self.udp_port_in)
+ else:
+ self.assertEqual(packet[ICMPv6EchoReply].id,
+ self.icmp_id_in)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet "
+ "(inside network):", packet))
+ raise
+
+ def create_stream_frag(self, src_if, dst, sport, dport, data,
+ proto=IP_PROTOS.tcp, echo_reply=False):
+ """
+ Create fragmented packet stream
+
+ :param src_if: Source interface
+ :param dst: Destination IPv4 address
+ :param sport: Source port
+ :param dport: Destination port
+ :param data: Payload data
+ :param proto: protocol (TCP, UDP, ICMP)
+ :param echo_reply: use echo_reply if protocol is ICMP
+ :returns: Fragments
+ """
+ if proto == IP_PROTOS.tcp:
+ p = (IP(src=src_if.remote_ip4, dst=dst) /
+ TCP(sport=sport, dport=dport) /
+ Raw(data))
+ p = p.__class__(scapy.compat.raw(p))
+ chksum = p[TCP].chksum
+ proto_header = TCP(sport=sport, dport=dport, chksum=chksum)
+ elif proto == IP_PROTOS.udp:
+ proto_header = UDP(sport=sport, dport=dport)
+ elif proto == IP_PROTOS.icmp:
+ if not echo_reply:
+ proto_header = ICMP(id=sport, type='echo-request')
+ else:
+ proto_header = ICMP(id=sport, type='echo-reply')
+ else:
+ raise Exception("Unsupported protocol")
+ id = random.randint(0, 65535)
+ pkts = []
+ if proto == IP_PROTOS.tcp:
+ raw = Raw(data[0:4])
+ else:
+ raw = Raw(data[0:16])
+ p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+ IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=0, id=id) /
+ proto_header /
+ raw)
+ pkts.append(p)
+ if proto == IP_PROTOS.tcp:
+ raw = Raw(data[4:20])
+ else:
+ raw = Raw(data[16:32])
+ p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+ IP(src=src_if.remote_ip4, dst=dst, flags="MF", frag=3, id=id,
+ proto=proto) /
+ raw)
+ pkts.append(p)
+ if proto == IP_PROTOS.tcp:
+ raw = Raw(data[20:])
+ else:
+ raw = Raw(data[32:])
+ p = (Ether(src=src_if.remote_mac, dst=src_if.local_mac) /
+ IP(src=src_if.remote_ip4, dst=dst, frag=5, proto=proto,
+ id=id) /
+ raw)
+ pkts.append(p)
+ return pkts
+
+ def create_stream_frag_ip6(self, src_if, dst, sport, dport, data,
+ pref=None, plen=0, frag_size=128):
+ """
+ Create fragmented packet stream
+
+ :param src_if: Source interface
+ :param dst: Destination IPv4 address
+ :param sport: Source TCP port
+ :param dport: Destination TCP port
+ :param data: Payload data
+ :param pref: NAT64 prefix
+ :param plen: NAT64 prefix length
+ :param fragsize: size of fragments
+ :returns: Fragments
+ """
+ if pref is None:
+ dst_ip6 = ''.join(['64:ff9b::', dst])
+ else:
+ dst_ip6 = self.compose_ip6(dst, pref, plen)
+
+ p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
+ IPv6(src=src_if.remote_ip6, dst=dst_ip6) /
+ IPv6ExtHdrFragment(id=random.randint(0, 65535)) /
+ TCP(sport=sport, dport=dport) /
+ Raw(data))
+
+ return fragment6(p, frag_size)
+
+ def reass_frags_and_verify(self, frags, src, dst):
+ """
+ Reassemble and verify fragmented packet
+
+ :param frags: Captured fragments
+ :param src: Source IPv4 address to verify
+ :param dst: Destination IPv4 address to verify
+
+ :returns: Reassembled IPv4 packet
+ """
+ buffer = BytesIO()
+ for p in frags:
+ self.assertEqual(p[IP].src, src)
+ self.assertEqual(p[IP].dst, dst)
+ self.assert_ip_checksum_valid(p)
+ buffer.seek(p[IP].frag * 8)
+ buffer.write(bytes(p[IP].payload))
+ ip = IP(src=frags[0][IP].src, dst=frags[0][IP].dst,
+ proto=frags[0][IP].proto)
+ if ip.proto == IP_PROTOS.tcp:
+ p = (ip / TCP(buffer.getvalue()))
+ self.logger.debug(ppp("Reassembled:", p))
+ self.assert_tcp_checksum_valid(p)
+ elif ip.proto == IP_PROTOS.udp:
+ p = (ip / UDP(buffer.getvalue()[:8]) /
+ Raw(buffer.getvalue()[8:]))
+ elif ip.proto == IP_PROTOS.icmp:
+ p = (ip / ICMP(buffer.getvalue()))
+ return p
+
+ def reass_frags_and_verify_ip6(self, frags, src, dst):
+ """
+ Reassemble and verify fragmented packet
+
+ :param frags: Captured fragments
+ :param src: Source IPv6 address to verify
+ :param dst: Destination IPv6 address to verify
+
+ :returns: Reassembled IPv6 packet
+ """
+ buffer = BytesIO()
+ for p in frags:
+ self.assertEqual(p[IPv6].src, src)
+ self.assertEqual(p[IPv6].dst, dst)
+ buffer.seek(p[IPv6ExtHdrFragment].offset * 8)
+ buffer.write(bytes(p[IPv6ExtHdrFragment].payload))
+ ip = IPv6(src=frags[0][IPv6].src, dst=frags[0][IPv6].dst,
+ nh=frags[0][IPv6ExtHdrFragment].nh)
+ if ip.nh == IP_PROTOS.tcp:
+ p = (ip / TCP(buffer.getvalue()))
+ elif ip.nh == IP_PROTOS.udp:
+ p = (ip / UDP(buffer.getvalue()))
+ self.logger.debug(ppp("Reassembled:", p))
+ self.assert_packet_checksums_valid(p)
+ return p
+
+ # TODO: ipfix needs to be separated from NAT base plugin
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def verify_ipfix_max_bibs(self, data, limit):
+ """
+ Verify IPFIX maximum BIB entries exceeded event
+
+ :param data: Decoded IPFIX data records
+ :param limit: Number of maximum BIB entries that can be created.
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ self.assertEqual(scapy.compat.orb(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 2), record[466])
+ # maxBIBEntries
+ self.assertEqual(struct.pack("I", limit), record[472])
+
+ # TODO: ipfix needs to be separated from NAT base plugin
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def verify_ipfix_bib(self, data, is_create, src_addr):
+ """
+ Verify IPFIX NAT64 BIB create and delete events
+
+ :param data: Decoded IPFIX data records
+ :param is_create: Create event if nonzero value otherwise delete event
+ :param src_addr: IPv6 source address
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ if is_create:
+ self.assertEqual(scapy.compat.orb(record[230]), 10)
+ else:
+ self.assertEqual(scapy.compat.orb(record[230]), 11)
+ # sourceIPv6Address
+ self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
+ # postNATSourceIPv4Address
+ self.assertEqual(self.nat_addr_n, record[225])
+ # protocolIdentifier
+ self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
+ # ingressVRFID
+ self.assertEqual(struct.pack("!I", 0), record[234])
+ # sourceTransportPort
+ self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
+ # postNAPTSourceTransportPort
+ self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
+
+ # TODO: ipfix needs to be separated from NAT base plugin
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def verify_ipfix_nat64_ses(self, data, is_create, src_addr, dst_addr,
+ dst_port):
+ """
+ Verify IPFIX NAT64 session create and delete events
+
+ :param data: Decoded IPFIX data records
+ :param is_create: Create event if nonzero value otherwise delete event
+ :param src_addr: IPv6 source address
+ :param dst_addr: IPv4 destination address
+ :param dst_port: destination TCP port
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ if is_create:
+ self.assertEqual(scapy.compat.orb(record[230]), 6)
+ else:
+ self.assertEqual(scapy.compat.orb(record[230]), 7)
+ # sourceIPv6Address
+ self.assertEqual(src_addr, str(ipaddress.IPv6Address(record[27])))
+ # destinationIPv6Address
+ self.assertEqual(socket.inet_pton(socket.AF_INET6,
+ self.compose_ip6(dst_addr,
+ '64:ff9b::',
+ 96)),
+ record[28])
+ # postNATSourceIPv4Address
+ self.assertEqual(self.nat_addr_n, record[225])
+ # postNATDestinationIPv4Address
+ self.assertEqual(socket.inet_pton(socket.AF_INET, dst_addr),
+ record[226])
+ # protocolIdentifier
+ self.assertEqual(IP_PROTOS.tcp, scapy.compat.orb(record[4]))
+ # ingressVRFID
+ self.assertEqual(struct.pack("!I", 0), record[234])
+ # sourceTransportPort
+ self.assertEqual(struct.pack("!H", self.tcp_port_in), record[7])
+ # postNAPTSourceTransportPort
+ self.assertEqual(struct.pack("!H", self.tcp_port_out), record[227])
+ # destinationTransportPort
+ self.assertEqual(struct.pack("!H", dst_port), record[11])
+ # postNAPTDestinationTransportPort
+ self.assertEqual(struct.pack("!H", dst_port), record[228])
+
+ def verify_syslog_sess(self, data, is_add=True, is_ip6=False):
+ message = data.decode('utf-8')
+ try:
+ message = SyslogMessage.parse(message)
+ except ParseError as e:
+ self.logger.error(e)
+ raise
+ else:
+ self.assertEqual(message.severity, SyslogSeverity.info)
+ self.assertEqual(message.appname, 'NAT')
+ self.assertEqual(message.msgid, 'SADD' if is_add else 'SDEL')
+ sd_params = message.sd.get('nsess')
+ self.assertTrue(sd_params is not None)
+ if is_ip6:
+ self.assertEqual(sd_params.get('IATYP'), 'IPv6')
+ self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip6)
+ else:
+ self.assertEqual(sd_params.get('IATYP'), 'IPv4')
+ self.assertEqual(sd_params.get('ISADDR'), self.pg0.remote_ip4)
+ self.assertTrue(sd_params.get('SSUBIX') is not None)
+ self.assertEqual(sd_params.get('ISPORT'), "%d" % self.tcp_port_in)
+ self.assertEqual(sd_params.get('XATYP'), 'IPv4')
+ self.assertEqual(sd_params.get('XSADDR'), self.nat_addr)
+ self.assertEqual(sd_params.get('XSPORT'), "%d" % self.tcp_port_out)
+ self.assertEqual(sd_params.get('PROTO'), "%d" % IP_PROTOS.tcp)
+ self.assertEqual(sd_params.get('SVLAN'), '0')
+ self.assertEqual(sd_params.get('XDADDR'), self.pg1.remote_ip4)
+ self.assertEqual(sd_params.get('XDPORT'),
+ "%d" % self.tcp_external_port)
+
+ def compose_ip6(self, ip4, pref, plen):
+ """
+ Compose IPv4-embedded IPv6 addresses
+
+ :param ip4: IPv4 address
+ :param pref: IPv6 prefix
+ :param plen: IPv6 prefix length
+ :returns: IPv4-embedded IPv6 addresses
+ """
+ pref_n = list(socket.inet_pton(socket.AF_INET6, pref))
+ ip4_n = list(socket.inet_pton(socket.AF_INET, ip4))
+ if plen == 32:
+ pref_n[4] = ip4_n[0]
+ pref_n[5] = ip4_n[1]
+ pref_n[6] = ip4_n[2]
+ pref_n[7] = ip4_n[3]
+ elif plen == 40:
+ pref_n[5] = ip4_n[0]
+ pref_n[6] = ip4_n[1]
+ pref_n[7] = ip4_n[2]
+ pref_n[9] = ip4_n[3]
+ elif plen == 48:
+ pref_n[6] = ip4_n[0]
+ pref_n[7] = ip4_n[1]
+ pref_n[9] = ip4_n[2]
+ pref_n[10] = ip4_n[3]
+ elif plen == 56:
+ pref_n[7] = ip4_n[0]
+ pref_n[9] = ip4_n[1]
+ pref_n[10] = ip4_n[2]
+ pref_n[11] = ip4_n[3]
+ elif plen == 64:
+ pref_n[9] = ip4_n[0]
+ pref_n[10] = ip4_n[1]
+ pref_n[11] = ip4_n[2]
+ pref_n[12] = ip4_n[3]
+ elif plen == 96:
+ pref_n[12] = ip4_n[0]
+ pref_n[13] = ip4_n[1]
+ pref_n[14] = ip4_n[2]
+ pref_n[15] = ip4_n[3]
+ packed_pref_n = b''.join([scapy.compat.chb(x) for x in pref_n])
+ return socket.inet_ntop(socket.AF_INET6, packed_pref_n)
+
+ # TODO: ipfix needs to be separated from NAT base plugin
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def verify_ipfix_max_sessions(self, data, limit):
+ """
+ Verify IPFIX maximum session entries exceeded event
+
+ :param data: Decoded IPFIX data records
+ :param limit: Number of maximum session entries that can be created.
+ """
+ self.assertEqual(1, len(data))
+ record = data[0]
+ # natEvent
+ self.assertEqual(scapy.compat.orb(record[230]), 13)
+ # natQuotaExceededEvent
+ self.assertEqual(struct.pack("I", 1), record[466])
+ # maxSessionEntries
+ self.assertEqual(struct.pack("I", limit), record[471])
+
+ def test_nat64_inside_interface_handles_neighbor_advertisement(self):
+ """ NAT64 inside interface handles Neighbor Advertisement """
+
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg5.sw_if_index)
+
+ # Try to send ping
+ ping = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
+ IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
+ ICMPv6EchoRequest())
+ pkts = [ping]
+ self.pg5.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ # Wait for Neighbor Solicitation
+ capture = self.pg5.get_capture(len(pkts))
+ packet = capture[0]
+ try:
+ self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
+ self.assertEqual(packet.haslayer(ICMPv6ND_NS), 1)
+ tgt = packet[ICMPv6ND_NS].tgt
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # Send Neighbor Advertisement
+ p = (Ether(dst=self.pg5.local_mac, src=self.pg5.remote_mac) /
+ IPv6(src=self.pg5.remote_ip6, dst=self.pg5.local_ip6) /
+ ICMPv6ND_NA(tgt=tgt) /
+ ICMPv6NDOptDstLLAddr(lladdr=self.pg5.remote_mac))
+ pkts = [p]
+ self.pg5.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ # Try to send ping again
+ pkts = [ping]
+ self.pg5.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ # Wait for ping reply
+ capture = self.pg5.get_capture(len(pkts))
+ packet = capture[0]
+ try:
+ self.assertEqual(packet[IPv6].src, self.pg5.local_ip6)
+ self.assertEqual(packet[IPv6].dst, self.pg5.remote_ip6)
+ self.assertEqual(packet.haslayer(ICMPv6EchoReply), 1)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_pool(self):
+ """ Add/delete address to NAT64 pool """
+ nat_addr = '1.2.3.4'
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
+ end_addr=nat_addr,
+ vrf_id=0xFFFFFFFF, is_add=1)
+
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(len(addresses), 1)
+ self.assertEqual(str(addresses[0].address), nat_addr)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=nat_addr,
+ end_addr=nat_addr,
+ vrf_id=0xFFFFFFFF, is_add=0)
+
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(len(addresses), 0)
+
+ def test_interface(self):
+ """ Enable/disable NAT64 feature on the interface """
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ interfaces = self.vapi.nat64_interface_dump()
+ self.assertEqual(len(interfaces), 2)
+ pg0_found = False
+ pg1_found = False
+ for intf in interfaces:
+ if intf.sw_if_index == self.pg0.sw_if_index:
+ self.assertEqual(intf.flags, self.config_flags.NAT_IS_INSIDE)
+ pg0_found = True
+ elif intf.sw_if_index == self.pg1.sw_if_index:
+ self.assertEqual(intf.flags, self.config_flags.NAT_IS_OUTSIDE)
+ pg1_found = True
+ self.assertTrue(pg0_found)
+ self.assertTrue(pg1_found)
+
+ features = self.vapi.cli("show interface features pg0")
+ self.assertIn('nat64-in2out', features)
+ features = self.vapi.cli("show interface features pg1")
+ self.assertIn('nat64-out2in', features)
+
+ self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=0, flags=flags,
+ sw_if_index=self.pg1.sw_if_index)
+
+ interfaces = self.vapi.nat64_interface_dump()
+ self.assertEqual(len(interfaces), 0)
+
+ def test_static_bib(self):
+ """ Add/delete static BIB entry """
+ in_addr = '2001:db8:85a3::8a2e:370:7334'
+ out_addr = '10.1.1.3'
+ in_port = 1234
+ out_port = 5678
+ proto = IP_PROTOS.tcp
+
+ self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
+ i_port=in_port, o_port=out_port,
+ proto=proto, vrf_id=0, is_add=1)
+ bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
+ static_bib_num = 0
+ for bibe in bib:
+ if bibe.flags & self.config_flags.NAT_IS_STATIC:
+ static_bib_num += 1
+ self.assertEqual(str(bibe.i_addr), in_addr)
+ self.assertEqual(str(bibe.o_addr), out_addr)
+ self.assertEqual(bibe.i_port, in_port)
+ self.assertEqual(bibe.o_port, out_port)
+ self.assertEqual(static_bib_num, 1)
+ bibs = self.statistics.get_counter('/nat64/total-bibs')
+ self.assertEqual(bibs[0][0], 1)
+
+ self.vapi.nat64_add_del_static_bib(i_addr=in_addr, o_addr=out_addr,
+ i_port=in_port, o_port=out_port,
+ proto=proto, vrf_id=0, is_add=0)
+ bib = self.vapi.nat64_bib_dump(proto=IP_PROTOS.tcp)
+ static_bib_num = 0
+ for bibe in bib:
+ if bibe.flags & self.config_flags.NAT_IS_STATIC:
+ static_bib_num += 1
+ self.assertEqual(static_bib_num, 0)
+ bibs = self.statistics.get_counter('/nat64/total-bibs')
+ self.assertEqual(bibs[0][0], 0)
+
+ def test_set_timeouts(self):
+ """ Set NAT64 timeouts """
+ # verify default values
+ timeouts = self.vapi.nat64_get_timeouts()
+ self.assertEqual(timeouts.udp, 300)
+ self.assertEqual(timeouts.icmp, 60)
+ self.assertEqual(timeouts.tcp_transitory, 240)
+ self.assertEqual(timeouts.tcp_established, 7440)
+
+ # set and verify custom values
+ self.vapi.nat64_set_timeouts(udp=200, tcp_established=7450,
+ tcp_transitory=250, icmp=30)
+ timeouts = self.vapi.nat64_get_timeouts()
+ self.assertEqual(timeouts.udp, 200)
+ self.assertEqual(timeouts.icmp, 30)
+ self.assertEqual(timeouts.tcp_transitory, 250)
+ self.assertEqual(timeouts.tcp_established, 7450)
+
+ def test_dynamic(self):
+ """ NAT64 dynamic translation test """
+ self.tcp_port_in = 6303
+ self.udp_port_in = 6304
+ self.icmp_id_in = 6305
+
+ ses_num_start = self.nat64_get_ses_num()
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ # in2out
+ tcpn = self.statistics.get_counter('/nat64/in2out/tcp')[0]
+ udpn = self.statistics.get_counter('/nat64/in2out/udp')[0]
+ icmpn = self.statistics.get_counter('/nat64/in2out/icmp')[0]
+ drops = self.statistics.get_counter('/nat64/in2out/drops')[0]
+
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ if_idx = self.pg0.sw_if_index
+ cnt = self.statistics.get_counter('/nat64/in2out/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat64/in2out/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat64/in2out/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat64/in2out/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
+
+ # out2in
+ tcpn = self.statistics.get_counter('/nat64/out2in/tcp')[0]
+ udpn = self.statistics.get_counter('/nat64/out2in/udp')[0]
+ icmpn = self.statistics.get_counter('/nat64/out2in/icmp')[0]
+ drops = self.statistics.get_counter('/nat64/out2in/drops')[0]
+
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+ self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+ if_idx = self.pg1.sw_if_index
+ cnt = self.statistics.get_counter('/nat64/out2in/tcp')[0]
+ self.assertEqual(cnt[if_idx] - tcpn[if_idx], 2)
+ cnt = self.statistics.get_counter('/nat64/out2in/udp')[0]
+ self.assertEqual(cnt[if_idx] - udpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat64/out2in/icmp')[0]
+ self.assertEqual(cnt[if_idx] - icmpn[if_idx], 1)
+ cnt = self.statistics.get_counter('/nat64/out2in/drops')[0]
+ self.assertEqual(cnt[if_idx] - drops[if_idx], 0)
+
+ bibs = self.statistics.get_counter('/nat64/total-bibs')
+ self.assertEqual(bibs[0][0], 3)
+ sessions = self.statistics.get_counter('/nat64/total-sessions')
+ self.assertEqual(sessions[0][0], 3)
+
+ # in2out
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ # out2in
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+ ses_num_end = self.nat64_get_ses_num()
+
+ self.assertEqual(ses_num_end - ses_num_start, 3)
+
+ # tenant with specific VRF
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
+ end_addr=self.vrf1_nat_addr,
+ vrf_id=self.vrf1_id, is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg2.sw_if_index)
+
+ pkts = self.create_stream_in_ip6(self.pg2, self.pg1)
+ self.pg2.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg2.get_capture(len(pkts))
+ self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg2.remote_ip6)
+
+ def test_static(self):
+ """ NAT64 static translation test """
+ self.tcp_port_in = 60303
+ self.udp_port_in = 60304
+ self.icmp_id_in = 60305
+ self.tcp_port_out = 60303
+ self.udp_port_out = 60304
+ self.icmp_id_out = 60305
+
+ ses_num_start = self.nat64_get_ses_num()
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
+ o_addr=self.nat_addr,
+ i_port=self.tcp_port_in,
+ o_port=self.tcp_port_out,
+ proto=IP_PROTOS.tcp, vrf_id=0,
+ is_add=1)
+ self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
+ o_addr=self.nat_addr,
+ i_port=self.udp_port_in,
+ o_port=self.udp_port_out,
+ proto=IP_PROTOS.udp, vrf_id=0,
+ is_add=1)
+ self.vapi.nat64_add_del_static_bib(i_addr=self.pg0.remote_ip6,
+ o_addr=self.nat_addr,
+ i_port=self.icmp_id_in,
+ o_port=self.icmp_id_out,
+ proto=IP_PROTOS.icmp, vrf_id=0,
+ is_add=1)
+
+ # in2out
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4, same_port=True)
+
+ # out2in
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+ self.verify_capture_in_ip6(capture, ip[IPv6].src, self.pg0.remote_ip6)
+
+ ses_num_end = self.nat64_get_ses_num()
+
+ self.assertEqual(ses_num_end - ses_num_start, 3)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_session_timeout(self):
+ """ NAT64 session timeout """
+ self.icmp_id_in = 1234
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+ self.vapi.nat64_set_timeouts(udp=300, tcp_established=5,
+ tcp_transitory=5,
+ icmp=5)
+
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+
+ ses_num_before_timeout = self.nat64_get_ses_num()
+
+ sleep(15)
+
+ # ICMP and TCP session after timeout
+ ses_num_after_timeout = self.nat64_get_ses_num()
+ self.assertEqual(ses_num_before_timeout - ses_num_after_timeout, 2)
+
+ def test_icmp_error(self):
+ """ NAT64 ICMP Error message translation """
+ self.tcp_port_in = 6303
+ self.udp_port_in = 6304
+ self.icmp_id_in = 6305
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ # send some packets to create sessions
+ pkts = self.create_stream_in_ip6(self.pg0, self.pg1)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture_ip4 = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture_ip4,
+ nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture_ip6 = self.pg0.get_capture(len(pkts))
+ ip = IPv6(src=''.join(['64:ff9b::', self.pg1.remote_ip4]))
+ self.verify_capture_in_ip6(capture_ip6, ip[IPv6].src,
+ self.pg0.remote_ip6)
+
+ # in2out
+ pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=ip[IPv6].src) /
+ ICMPv6DestUnreach(code=1) /
+ packet[IPv6] for packet in capture_ip6]
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IP].src, self.nat_addr)
+ self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+ self.assertEqual(packet[ICMP].type, 3)
+ self.assertEqual(packet[ICMP].code, 13)
+ inner = packet[IPerror]
+ self.assertEqual(inner.src, self.pg1.remote_ip4)
+ self.assertEqual(inner.dst, self.nat_addr)
+ self.assert_packet_checksums_valid(packet)
+ if inner.haslayer(TCPerror):
+ self.assertEqual(inner[TCPerror].dport, self.tcp_port_out)
+ elif inner.haslayer(UDPerror):
+ self.assertEqual(inner[UDPerror].dport, self.udp_port_out)
+ else:
+ self.assertEqual(inner[ICMPerror].id, self.icmp_id_out)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # out2in
+ pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ ICMP(type=3, code=13) /
+ packet[IP] for packet in capture_ip4]
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, ip.src)
+ self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
+ icmp = packet[ICMPv6DestUnreach]
+ self.assertEqual(icmp.code, 1)
+ inner = icmp[IPerror6]
+ self.assertEqual(inner.src, self.pg0.remote_ip6)
+ self.assertEqual(inner.dst, ip.src)
+ self.assert_icmpv6_checksum_valid(packet)
+ if inner.haslayer(TCPerror):
+ self.assertEqual(inner[TCPerror].sport, self.tcp_port_in)
+ elif inner.haslayer(UDPerror):
+ self.assertEqual(inner[UDPerror].sport, self.udp_port_in)
+ else:
+ self.assertEqual(inner[ICMPv6EchoRequest].id,
+ self.icmp_id_in)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_hairpinning(self):
+ """ NAT64 hairpinning """
+
+ client = self.pg0.remote_hosts[0]
+ server = self.pg0.remote_hosts[1]
+ server_tcp_in_port = 22
+ server_tcp_out_port = 4022
+ server_udp_in_port = 23
+ server_udp_out_port = 4023
+ client_tcp_in_port = 1234
+ client_udp_in_port = 1235
+ client_tcp_out_port = 0
+ client_udp_out_port = 0
+ ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
+ nat_addr_ip6 = ip.src
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+ o_addr=self.nat_addr,
+ i_port=server_tcp_in_port,
+ o_port=server_tcp_out_port,
+ proto=IP_PROTOS.tcp, vrf_id=0,
+ is_add=1)
+ self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+ o_addr=self.nat_addr,
+ i_port=server_udp_in_port,
+ o_port=server_udp_out_port,
+ proto=IP_PROTOS.udp, vrf_id=0,
+ is_add=1)
+
+ # client to server
+ pkts = []
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=client.ip6, dst=nat_addr_ip6) /
+ TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
+ pkts.append(p)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=client.ip6, dst=nat_addr_ip6) /
+ UDP(sport=client_udp_in_port, dport=server_udp_out_port))
+ pkts.append(p)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, nat_addr_ip6)
+ self.assertEqual(packet[IPv6].dst, server.ip6)
+ self.assert_packet_checksums_valid(packet)
+ if packet.haslayer(TCP):
+ self.assertNotEqual(packet[TCP].sport, client_tcp_in_port)
+ self.assertEqual(packet[TCP].dport, server_tcp_in_port)
+ client_tcp_out_port = packet[TCP].sport
+ else:
+ self.assertNotEqual(packet[UDP].sport, client_udp_in_port)
+ self.assertEqual(packet[UDP].dport, server_udp_in_port)
+ client_udp_out_port = packet[UDP].sport
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # server to client
+ pkts = []
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=server.ip6, dst=nat_addr_ip6) /
+ TCP(sport=server_tcp_in_port, dport=client_tcp_out_port))
+ pkts.append(p)
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=server.ip6, dst=nat_addr_ip6) /
+ UDP(sport=server_udp_in_port, dport=client_udp_out_port))
+ pkts.append(p)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, nat_addr_ip6)
+ self.assertEqual(packet[IPv6].dst, client.ip6)
+ self.assert_packet_checksums_valid(packet)
+ if packet.haslayer(TCP):
+ self.assertEqual(packet[TCP].sport, server_tcp_out_port)
+ self.assertEqual(packet[TCP].dport, client_tcp_in_port)
+ else:
+ self.assertEqual(packet[UDP].sport, server_udp_out_port)
+ self.assertEqual(packet[UDP].dport, client_udp_in_port)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # ICMP error
+ pkts = []
+ pkts = [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=client.ip6, dst=nat_addr_ip6) /
+ ICMPv6DestUnreach(code=1) /
+ packet[IPv6] for packet in capture]
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ for packet in capture:
+ try:
+ self.assertEqual(packet[IPv6].src, nat_addr_ip6)
+ self.assertEqual(packet[IPv6].dst, server.ip6)
+ icmp = packet[ICMPv6DestUnreach]
+ self.assertEqual(icmp.code, 1)
+ inner = icmp[IPerror6]
+ self.assertEqual(inner.src, server.ip6)
+ self.assertEqual(inner.dst, nat_addr_ip6)
+ self.assert_packet_checksums_valid(packet)
+ if inner.haslayer(TCPerror):
+ self.assertEqual(inner[TCPerror].sport, server_tcp_in_port)
+ self.assertEqual(inner[TCPerror].dport,
+ client_tcp_out_port)
+ else:
+ self.assertEqual(inner[UDPerror].sport, server_udp_in_port)
+ self.assertEqual(inner[UDPerror].dport,
+ client_udp_out_port)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_prefix(self):
+ """ NAT64 Network-Specific Prefix """
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.vrf1_nat_addr,
+ end_addr=self.vrf1_nat_addr,
+ vrf_id=self.vrf1_id, is_add=1)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg2.sw_if_index)
+
+ # Add global prefix
+ global_pref64 = "2001:db8::"
+ global_pref64_len = 32
+ global_pref64_str = "{}/{}".format(global_pref64, global_pref64_len)
+ self.vapi.nat64_add_del_prefix(prefix=global_pref64_str, vrf_id=0,
+ is_add=1)
+
+ prefix = self.vapi.nat64_prefix_dump()
+ self.assertEqual(len(prefix), 1)
+ self.assertEqual(str(prefix[0].prefix), global_pref64_str)
+ self.assertEqual(prefix[0].vrf_id, 0)
+
+ # Add tenant specific prefix
+ vrf1_pref64 = "2001:db8:122:300::"
+ vrf1_pref64_len = 56
+ vrf1_pref64_str = "{}/{}".format(vrf1_pref64, vrf1_pref64_len)
+ self.vapi.nat64_add_del_prefix(prefix=vrf1_pref64_str,
+ vrf_id=self.vrf1_id, is_add=1)
+
+ prefix = self.vapi.nat64_prefix_dump()
+ self.assertEqual(len(prefix), 2)
+
+ # Global prefix
+ pkts = self.create_stream_in_ip6(self.pg0,
+ self.pg1,
+ pref=global_pref64,
+ plen=global_pref64_len)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=self.nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ dst_ip = self.compose_ip6(self.pg1.remote_ip4,
+ global_pref64,
+ global_pref64_len)
+ self.verify_capture_in_ip6(capture, dst_ip, self.pg0.remote_ip6)
+
+ # Tenant specific prefix
+ pkts = self.create_stream_in_ip6(self.pg2,
+ self.pg1,
+ pref=vrf1_pref64,
+ plen=vrf1_pref64_len)
+ self.pg2.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_out(capture, nat_ip=self.vrf1_nat_addr,
+ dst_ip=self.pg1.remote_ip4)
+
+ pkts = self.create_stream_out(self.pg1, dst_ip=self.vrf1_nat_addr)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg2.get_capture(len(pkts))
+ dst_ip = self.compose_ip6(self.pg1.remote_ip4,
+ vrf1_pref64,
+ vrf1_pref64_len)
+ self.verify_capture_in_ip6(capture, dst_ip, self.pg2.remote_ip6)
+
+ def test_unknown_proto(self):
+ """ NAT64 translate packet with unknown protocol """
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+ remote_ip6 = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
+
+ # in2out
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=remote_ip6) /
+ TCP(sport=self.tcp_port_in, dport=20))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=remote_ip6, nh=47) /
+ GRE() /
+ IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IP].src, self.nat_addr)
+ self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
+ self.assertEqual(packet.haslayer(GRE), 1)
+ self.assert_packet_checksums_valid(packet)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # out2in
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ GRE() /
+ IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IPv6].src, remote_ip6)
+ self.assertEqual(packet[IPv6].dst, self.pg0.remote_ip6)
+ self.assertEqual(packet[IPv6].nh, 47)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_hairpinning_unknown_proto(self):
+ """ NAT64 translate packet with unknown protocol - hairpinning """
+
+ client = self.pg0.remote_hosts[0]
+ server = self.pg0.remote_hosts[1]
+ server_tcp_in_port = 22
+ server_tcp_out_port = 4022
+ client_tcp_in_port = 1234
+ client_tcp_out_port = 1235
+ server_nat_ip = "10.0.0.100"
+ client_nat_ip = "10.0.0.110"
+ server_nat_ip6 = self.compose_ip6(server_nat_ip, '64:ff9b::', 96)
+ client_nat_ip6 = self.compose_ip6(client_nat_ip, '64:ff9b::', 96)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=server_nat_ip,
+ end_addr=client_nat_ip,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+ o_addr=server_nat_ip,
+ i_port=server_tcp_in_port,
+ o_port=server_tcp_out_port,
+ proto=IP_PROTOS.tcp, vrf_id=0,
+ is_add=1)
+
+ self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+ o_addr=server_nat_ip, i_port=0,
+ o_port=0,
+ proto=IP_PROTOS.gre, vrf_id=0,
+ is_add=1)
+
+ self.vapi.nat64_add_del_static_bib(i_addr=client.ip6n,
+ o_addr=client_nat_ip,
+ i_port=client_tcp_in_port,
+ o_port=client_tcp_out_port,
+ proto=IP_PROTOS.tcp, vrf_id=0,
+ is_add=1)
+
+ # client to server
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=client.ip6, dst=server_nat_ip6) /
+ TCP(sport=client_tcp_in_port, dport=server_tcp_out_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=client.ip6, dst=server_nat_ip6, nh=IP_PROTOS.gre) /
+ GRE() /
+ IP(src=self.pg2.local_ip4, dst=self.pg2.remote_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IPv6].src, client_nat_ip6)
+ self.assertEqual(packet[IPv6].dst, server.ip6)
+ self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ # server to client
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=server.ip6, dst=client_nat_ip6, nh=IP_PROTOS.gre) /
+ GRE() /
+ IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
+ TCP(sport=1234, dport=1234))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg0.get_capture(1)
+ packet = p[0]
+ try:
+ self.assertEqual(packet[IPv6].src, server_nat_ip6)
+ self.assertEqual(packet[IPv6].dst, client.ip6)
+ self.assertEqual(packet[IPv6].nh, IP_PROTOS.gre)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
+ def test_one_armed_nat64(self):
+ """ One armed NAT64 """
+ external_port = 0
+ remote_host_ip6 = self.compose_ip6(self.pg3.remote_ip4,
+ '64:ff9b::',
+ 96)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg3.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg3.sw_if_index)
+
+ # in2out
+ p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
+ IPv6(src=self.pg3.remote_ip6, dst=remote_host_ip6) /
+ TCP(sport=12345, dport=80))
+ self.pg3.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg3.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(ip.dst, self.pg3.remote_ip4)
+ self.assertNotEqual(tcp.sport, 12345)
+ external_port = tcp.sport
+ self.assertEqual(tcp.dport, 80)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ # out2in
+ p = (Ether(src=self.pg3.remote_mac, dst=self.pg3.local_mac) /
+ IP(src=self.pg3.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=80, dport=external_port))
+ self.pg3.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg3.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IPv6]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, remote_host_ip6)
+ self.assertEqual(ip.dst, self.pg3.remote_ip6)
+ self.assertEqual(tcp.sport, 80)
+ self.assertEqual(tcp.dport, 12345)
+ self.assert_packet_checksums_valid(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ def test_frag_in_order(self):
+ """ NAT64 translate fragments arriving in order """
+ self.tcp_port_in = random.randint(1025, 65535)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ # in2out
+ data = b'a' * 200
+ pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
+ self.tcp_port_in, 20, data)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ frags = self.pg1.get_capture(len(pkts))
+ p = self.reass_frags_and_verify(frags,
+ self.nat_addr,
+ self.pg1.remote_ip4)
+ self.assertEqual(p[TCP].dport, 20)
+ self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
+ self.tcp_port_out = p[TCP].sport
+ self.assertEqual(data, p[Raw].load)
+
+ # out2in
+ data = b"A" * 4 + b"b" * 16 + b"C" * 3
+ pkts = self.create_stream_frag(self.pg1,
+ self.nat_addr,
+ 20,
+ self.tcp_port_out,
+ data)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ frags = self.pg0.get_capture(len(pkts))
+ self.logger.debug(ppc("Captured:", frags))
+ src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
+ p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
+ self.assertEqual(p[TCP].sport, 20)
+ self.assertEqual(p[TCP].dport, self.tcp_port_in)
+ self.assertEqual(data, p[Raw].load)
+
+ def test_reass_hairpinning(self):
+ """ NAT64 fragments hairpinning """
+ data = b'a' * 200
+ server = self.pg0.remote_hosts[1]
+ server_in_port = random.randint(1025, 65535)
+ server_out_port = random.randint(1025, 65535)
+ client_in_port = random.randint(1025, 65535)
+ ip = IPv6(src=''.join(['64:ff9b::', self.nat_addr]))
+ nat_addr_ip6 = ip.src
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ # add static BIB entry for server
+ self.vapi.nat64_add_del_static_bib(i_addr=server.ip6n,
+ o_addr=self.nat_addr,
+ i_port=server_in_port,
+ o_port=server_out_port,
+ proto=IP_PROTOS.tcp, vrf_id=0,
+ is_add=1)
+
+ # send packet from host to server
+ pkts = self.create_stream_frag_ip6(self.pg0,
+ self.nat_addr,
+ client_in_port,
+ server_out_port,
+ data)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ frags = self.pg0.get_capture(len(pkts))
+ self.logger.debug(ppc("Captured:", frags))
+ p = self.reass_frags_and_verify_ip6(frags, nat_addr_ip6, server.ip6)
+ self.assertNotEqual(p[TCP].sport, client_in_port)
+ self.assertEqual(p[TCP].dport, server_in_port)
+ self.assertEqual(data, p[Raw].load)
+
+ def test_frag_out_of_order(self):
+ """ NAT64 translate fragments arriving out of order """
+ self.tcp_port_in = random.randint(1025, 65535)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ # in2out
+ data = b'a' * 200
+ pkts = self.create_stream_frag_ip6(self.pg0, self.pg1.remote_ip4,
+ self.tcp_port_in, 20, data)
+ pkts.reverse()
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ frags = self.pg1.get_capture(len(pkts))
+ p = self.reass_frags_and_verify(frags,
+ self.nat_addr,
+ self.pg1.remote_ip4)
+ self.assertEqual(p[TCP].dport, 20)
+ self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
+ self.tcp_port_out = p[TCP].sport
+ self.assertEqual(data, p[Raw].load)
+
+ # out2in
+ data = b"A" * 4 + b"B" * 16 + b"C" * 3
+ pkts = self.create_stream_frag(self.pg1,
+ self.nat_addr,
+ 20,
+ self.tcp_port_out,
+ data)
+ pkts.reverse()
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ frags = self.pg0.get_capture(len(pkts))
+ src = self.compose_ip6(self.pg1.remote_ip4, '64:ff9b::', 96)
+ p = self.reass_frags_and_verify_ip6(frags, src, self.pg0.remote_ip6)
+ self.assertEqual(p[TCP].sport, 20)
+ self.assertEqual(p[TCP].dport, self.tcp_port_in)
+ self.assertEqual(data, p[Raw].load)
+
+ def test_interface_addr(self):
+ """ Acquire NAT64 pool addresses from interface """
+ self.vapi.nat64_add_del_interface_addr(
+ is_add=1,
+ sw_if_index=self.pg4.sw_if_index)
+
+ # no address in NAT64 pool
+ addresses = self.vapi.nat44_address_dump()
+ self.assertEqual(0, len(addresses))
+
+ # configure interface address and check NAT64 address pool
+ self.pg4.config_ip4()
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(len(addresses), 1)
+
+ self.assertEqual(str(addresses[0].address),
+ self.pg4.local_ip4)
+
+ # remove interface address and check NAT64 address pool
+ self.pg4.unconfig_ip4()
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(0, len(addresses))
+
+ # TODO: ipfix needs to be separated from NAT base plugin
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_ipfix_max_bibs_sessions(self):
+ """ IPFIX logging maximum session and BIB entries exceeded """
+ max_bibs = 1280
+ max_sessions = 2560
+ remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
+ '64:ff9b::',
+ 96)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+
+ pkts = []
+ src = ""
+ for i in range(0, max_bibs):
+ src = "fd01:aa::%x" % (i)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=src, dst=remote_host_ip6) /
+ TCP(sport=12345, dport=80))
+ pkts.append(p)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=src, dst=remote_host_ip6) /
+ TCP(sport=12345, dport=22))
+ pkts.append(p)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(max_sessions)
+
+ self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
+ src_address=self.pg3.local_ip4,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port,
+ enable=1)
+
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=src, dst=remote_host_ip6) /
+ TCP(sport=12345, dport=25))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sleep(1)
+ self.vapi.ipfix_flush()
+ capture = self.pg3.get_capture(7)
+ ipfix = IPFIXDecoder()
+ # first load template
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Template):
+ ipfix.add_template(p.getlayer(Template))
+ # verify events in data set
+ for p in capture:
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ self.verify_ipfix_max_sessions(data, max_sessions)
+
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
+ TCP(sport=12345, dport=80))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sleep(1)
+ self.vapi.ipfix_flush()
+ capture = self.pg3.get_capture(1)
+ # verify events in data set
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ self.verify_ipfix_max_bibs(data, max_bibs)
+
+ # TODO: ipfix needs to be separated from NAT base plugin
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_ipfix_bib_ses(self):
+ """ IPFIX logging NAT64 BIB/session create and delete events """
+ self.tcp_port_in = random.randint(1025, 65535)
+ remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
+ '64:ff9b::',
+ 96)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+ self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4,
+ src_address=self.pg3.local_ip4,
+ path_mtu=512,
+ template_interval=10)
+ self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port,
+ enable=1)
+
+ # Create
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
+ TCP(sport=self.tcp_port_in, dport=25))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+ self.tcp_port_out = p[0][TCP].sport
+ self.vapi.ipfix_flush()
+ capture = self.pg3.get_capture(8)
+ ipfix = IPFIXDecoder()
+ # first load template
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Template):
+ ipfix.add_template(p.getlayer(Template))
+ # verify events in data set
+ for p in capture:
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ if scapy.compat.orb(data[0][230]) == 10:
+ self.verify_ipfix_bib(data, 1, self.pg0.remote_ip6)
+ elif scapy.compat.orb(data[0][230]) == 6:
+ self.verify_ipfix_nat64_ses(data,
+ 1,
+ self.pg0.remote_ip6,
+ self.pg1.remote_ip4,
+ 25)
+ else:
+ self.logger.error(ppp("Unexpected or invalid packet: ", p))
+
+ # Delete
+ self.pg_enable_capture(self.pg_interfaces)
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=0)
+ self.vapi.ipfix_flush()
+ capture = self.pg3.get_capture(2)
+ # verify events in data set
+ for p in capture:
+ self.assertTrue(p.haslayer(IPFIX))
+ self.assertEqual(p[IP].src, self.pg3.local_ip4)
+ self.assertEqual(p[IP].dst, self.pg3.remote_ip4)
+ self.assertEqual(p[UDP].sport, self.ipfix_src_port)
+ self.assertEqual(p[UDP].dport, 4739)
+ self.assertEqual(p[IPFIX].observationDomainID,
+ self.ipfix_domain_id)
+ if p.haslayer(Data):
+ data = ipfix.decode_data_set(p.getlayer(Set))
+ if scapy.compat.orb(data[0][230]) == 11:
+ self.verify_ipfix_bib(data, 0, self.pg0.remote_ip6)
+ elif scapy.compat.orb(data[0][230]) == 7:
+ self.verify_ipfix_nat64_ses(data,
+ 0,
+ self.pg0.remote_ip6,
+ self.pg1.remote_ip4,
+ 25)
+ else:
+ self.logger.error(ppp("Unexpected or invalid packet: ", p))
+
+ def test_syslog_sess(self):
+ """ Test syslog session creation and deletion """
+ self.tcp_port_in = random.randint(1025, 65535)
+ remote_host_ip6 = self.compose_ip6(self.pg1.remote_ip4,
+ '64:ff9b::',
+ 96)
+
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=1)
+ flags = self.config_flags.NAT_IS_INSIDE
+ self.vapi.nat64_add_del_interface(is_add=1, flags=flags,
+ sw_if_index=self.pg0.sw_if_index)
+ self.vapi.nat64_add_del_interface(is_add=1, flags=0,
+ sw_if_index=self.pg1.sw_if_index)
+ self.vapi.syslog_set_filter(
+ self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_INFO)
+ self.vapi.syslog_set_sender(self.pg3.local_ip4, self.pg3.remote_ip4)
+
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=remote_host_ip6) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ p = self.pg1.get_capture(1)
+ self.tcp_port_out = p[0][TCP].sport
+ capture = self.pg3.get_capture(1)
+ self.verify_syslog_sess(capture[0][Raw].load, is_ip6=True)
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=self.nat_addr,
+ end_addr=self.nat_addr,
+ vrf_id=0xFFFFFFFF,
+ is_add=0)
+ capture = self.pg3.get_capture(1)
+ self.verify_syslog_sess(capture[0][Raw].load, False, True)
+
+ def nat64_get_ses_num(self):
+ """
+ Return number of active NAT64 sessions.
+ """
+ st = self.vapi.nat64_st_dump(proto=255)
+ return len(st)
+
+ def clear_nat64(self):
+ """
+ Clear NAT64 configuration.
+ """
+ self.vapi.nat_ipfix_enable_disable(domain_id=self.ipfix_domain_id,
+ src_port=self.ipfix_src_port,
+ enable=0)
+ self.ipfix_src_port = 4739
+ self.ipfix_domain_id = 1
+
+ self.vapi.syslog_set_filter(
+ self.SYSLOG_SEVERITY.SYSLOG_API_SEVERITY_EMERG)
+
+ self.vapi.nat64_set_timeouts(udp=300, tcp_established=7440,
+ tcp_transitory=240, icmp=60)
+
+ interfaces = self.vapi.nat64_interface_dump()
+ for intf in interfaces:
+ self.vapi.nat64_add_del_interface(is_add=0, flags=intf.flags,
+ sw_if_index=intf.sw_if_index)
+
+ bib = self.vapi.nat64_bib_dump(proto=255)
+ for bibe in bib:
+ if bibe.flags & self.config_flags.NAT_IS_STATIC:
+ self.vapi.nat64_add_del_static_bib(i_addr=bibe.i_addr,
+ o_addr=bibe.o_addr,
+ i_port=bibe.i_port,
+ o_port=bibe.o_port,
+ proto=bibe.proto,
+ vrf_id=bibe.vrf_id,
+ is_add=0)
+
+ adresses = self.vapi.nat64_pool_addr_dump()
+ for addr in adresses:
+ self.vapi.nat64_add_del_pool_addr_range(start_addr=addr.address,
+ end_addr=addr.address,
+ vrf_id=addr.vrf_id,
+ is_add=0)
+
+ prefixes = self.vapi.nat64_prefix_dump()
+ for prefix in prefixes:
+ self.vapi.nat64_add_del_prefix(prefix=str(prefix.prefix),
+ vrf_id=prefix.vrf_id, is_add=0)
+
+ bibs = self.statistics.get_counter('/nat64/total-bibs')
+ self.assertEqual(bibs[0][0], 0)
+ sessions = self.statistics.get_counter('/nat64/total-sessions')
+ self.assertEqual(sessions[0][0], 0)
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / commitdiff